
A test unit, or prototype, of NASA's Advanced Plant Habitat (APH) with its first initial grow test in the Space Station Processing Facility at the agency's Kennedy Space Center in Florida. The taller plants pictured are dwarf wheat and the smaller plants are Arabidopsis. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Jeffrey Richards, a project science coordinator with URS Federal Services, secures Arabidopsis seeds, commonly known as thale cress, in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida on Wednesday, May 9. The APH base will be delivered to the International Space Station aboard Orbital ATK's Cygnus spacecraft on the company's ninth Commercial Resupply Services mission for NASA. The APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that is being used to conduct bioscience research on the space station. Cygnus will launch on Orbital ATK's Antares rocket from Wallops Flight Facility in Wallops Island, Virginia. Launch is targeted for May 20, 2018.

Jeffrey Richards, a project science coordinator with URS Federal Services, secures Arabidopsis seeds, commonly known as thale cress, in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida on Wednesday, May 9. The APH base will be delivered to the International Space Station aboard Orbital ATK's Cygnus spacecraft on the company's ninth Commercial Resupply Services mission for NASA. The APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that is being used to conduct bioscience research on the space station. Cygnus will launch on Orbital ATK's Antares rocket from Wallops Flight Facility in Wallops Island, Virginia. Launch is targeted for May 20, 2018.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, research scientists prepare the science carrier, or base, of the Advanced Plant Habitat (APH) for planting of Arabidopsis seeds, commonly known as thale cress, on Wednesday, May 9. The APH base will be delivered to the International Space Station aboard Orbital ATK's Cygnus spacecraft on the company's ninth Commercial Resupply Services mission for NASA. The APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that is being used to conduct bioscience research on the space station. Cygnus will launch on Orbital ATK's Antares rocket from Wallops Flight Facility in Wallops Island, Virginia. Launch is targeted for May 20, 2018.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, research scientists prepare the science carrier, or base, of the Advanced Plant Habitat (APH) for planting of Arabidopsis seeds, commonly known as thale cress, on Wednesday, May 9. The APH base will be delivered to the International Space Station aboard Orbital ATK's Cygnus spacecraft on the company's ninth Commercial Resupply Services mission for NASA. The APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that is being used to conduct bioscience research on the space station. Cygnus will launch on Orbital ATK's Antares rocket from Wallops Flight Facility in Wallops Island, Virginia. Launch is targeted for May 20, 2018.

Jeffrey Richards, at left, a project science coordinator with URS Federal Services, secures Arabidopsis seeds, commonly known as thale cress, in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida on Wednesday, May 9. The APH base will be delivered to the International Space Station aboard Orbital ATK's Cygnus spacecraft on the company's ninth Commercial Resupply Services mission for NASA. The APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that is being used to conduct bioscience research on the space station. Cygnus will launch on Orbital ATK's Antares rocket from Wallops Flight Facility in Wallops Island, Virginia. Launch is targeted for May 20, 2018.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a research scientist prepares a fixative which will be used to secure Arabidopsis seeds, commonly known as thale cress, inside the science carrier, or base, of the Advanced Plant Habitat (APH) on Wednesday, May 9. The APH base will be delivered to the International Space Station aboard Orbital ATK's Cygnus spacecraft on the company's ninth Commercial Resupply Services mission for NASA. The APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that is being used to conduct bioscience research on the space station. Cygnus will launch on Orbital ATK's Antares rocket from Wallops Flight Facility in Wallops Island, Virginia. Launch is targeted for May 20, 2018.

Jeffrey Richards, a project science coordinator with URS Federal Services, uses a fixative to secure Arabidopsis seeds, commonly known as thale cress, in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida on Wednesday, May 9. The APH base will be delivered to the International Space Station aboard Orbital ATK's Cygnus spacecraft on the company's ninth Commercial Resupply Services mission for NASA. The APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that is being used to conduct bioscience research on the space station. Cygnus will launch on Orbital ATK's Antares rocket from Wallops Flight Facility in Wallops Island, Virginia. Launch is targeted for May 20, 2018.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, several varieties of Arabidopsis seeds, commonly known as thale cress, are being prepared for securing in the science carrier, or base, of the Advanced Plant Habitat (APH) on Wednesday, May 9. The APH base will be delivered to the International Space Station aboard Orbital ATK's Cygnus spacecraft on the company's ninth Commercial Resupply Services mission for NASA. The APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that is being used to conduct bioscience research on the space station. Cygnus will launch on Orbital ATK's Antares rocket from Wallops Flight Facility in Wallops Island, Virginia. Launch is targeted for May 20, 2018.

Radish plants are growing inside the Advanced Plant Habitat (APH) ground unit inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida on June 13, 2019. The plants are being grown as part of a science verification test for PH-02, a Space Life and Physical Sciences Research and Applications-funded experiment which seeks to determine the effects of spaceflight on radishes. The APH is a highly automated plant growth chamber with 180 sensors and is able to closely regulate variables related to plant growth.

Radish plants are growing inside the Advanced Plant Habitat (APH) ground unit inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida on June 13, 2019. The plants are being grown as part of a science verification test for PH-02, a Space Life and Physical Sciences Research and Applications-funded experiment which seeks to determine the effects of spaceflight on radishes. The APH is a highly automated plant growth chamber with 180 sensors and is able to closely regulate variables related to plant growth.

Radish plants are growing inside the Advanced Plant Habitat (APH) ground unit inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida on June 13, 2019. The plants are being grown as part of a science verification test for PH-02, a Space Life and Physical Sciences Research and Applications-funded experiment which seeks to determine the effects of spaceflight on radishes. The APH is a highly automated plant growth chamber with 180 sensors and is able to closely regulate variables related to plant growth.

A colorful radish plant is in view inside the Advanced Plant Habitat (APH) ground unit inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida on June 13, 2019. The radishes are being grown as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

A radish plant is weighed inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on June 13, 2019. The radishes are being harvested from the base of the Advanced Plant Habitat (APH) ground unit as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

The first growth test of crops in the Advanced Plant Habitat aboard the International Space Station yielded great results. Arabidopsis seeds – small flowering plants related to cabbage and mustard – grew for about six weeks and the dwarf wheat for five weeks. The APH is now ready to support large plant testing on ISS. APH is a fully enclosed, closed-loop system with an environmentally controlled growth chamber. It uses red, blue and green LED lights, and broad spectrum white LED lights. The system's more than 180 sensors will relay real-time information, including temperature, oxygen content and moisture levels back to the team at Kennedy Space Center.

Clayton Grosse, a mechanical engineer with Techshot, prepares to harvest radish plants from the base of the Advanced Plant Habitat (APH) ground unit inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on June 13, 2019. The radishes are being harvested as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

Inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida, a plant biologist prepares to harvest radish plants growing in the Advanced Plant Habitat (APH) ground unit on June 13, 2019. The radishes are being harvested as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

Inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida, plant biologists prepare to harvest radish plants growing in the Advanced Plant Habitat (APH) ground unit on June 13, 2019. The radishes are being harvested as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

Oscar Monje, Ph.D., a plant physiologist with AECOM Management Services, weighs a harvested radish plant inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on June 13, 2019. The radishes are being harvested from the base of the Advanced Plant Habitat (APH) ground unit as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

Inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida, a plant biologist prepares to harvest radish plants growing in the Advanced Plant Habitat (APH) ground unit on June 13, 2019. The radishes are being harvested as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

A sample of a leaf from one of the radish plant growing in the base of the Advanced Plant Habitat (APH) ground unit is taken inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on June 13, 2019. The radishes are being harvested as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

Clayton Grosse, a mechanical engineer with Techshot, uses a punch to take a sample of the leaf of a radish plant growing in the base of the Advanced Plant Habitat (APH) ground unit, inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on June 13, 2019. The radishes are being harvested as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

A test unit, or prototype, of NASA's Advanced Plant Habitat (APH) was delivered to the Space Station Processing Facility at the agency's Kennedy Space Center in Florida. The APH is the largest plant chamber built for the agency. Oscar Monje, a scientist on the Engineering Services Contract, prepares the base of the APH for engineering development tests to see how the science will integrate with the various systems of the plant habitat. The APH will have about 180 sensors and fourt times the light output of Veggie. The APH will be delivered to the International Space Station in March 2017.

Dr. Oscar Monje, a research scientist, packs a growing substrate called arcillite in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Dr. Oscar Monje, a research scientist, pours a growing substrate called arcillite in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Dr. Oscar Monje, a research scientist, pours a growing substrate called arcillite in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

A test unit, or prototype, of NASA's Advanced Plant Habitat (APH) was delivered to the Space Station Processing Facility at the agency's Kennedy Space Center in Florida. The APH is the largest plant chamber built for the agency. The base of the APH is being prepared for engineering development tests to see how the science will integrate with the various systems of the plant habitat. It will have 180 sensors and four times the light output of Veggie. The APH will be delivered to the International Space Station in March 2017.

Inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, scientists are preparing the science carrier, or base, of the Advanced Plant Habitat (APH). A growing substrate called arcillite has been packed down in the base and coverings are being secured to seal the base. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, scientists prepared the science carrier, or base, of the Advanced Plant Habitat (APH). A growing substrate called arcillite was packed down in the base and coverings were secured on top of the base. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, scientists are preparing the science carrier, or base, of the Advanced Plant Habitat (APH). A growing substrate called arcillite has been packed down in the base and coverings are being secured to seal the base. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a quality technician checks the hardware for the Advanced Plant Habitat flight unit. The flight unit is an exact replica of the APH that was delivered to the International Space Station. Validation tests and post-delivery checkout was performed to prepare for space station in-orbit APH activities. The flight unit will be moved to the International Space Station Environmental Simulator to begin an experiment verification test for the science that will fly on the first mission, PH-01. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the space station.

Inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a scientist inserts Apogee wheat seeds into the science carrier, or base, of the Advanced Plant Habitat (APH). A growing substrate called arcillite was packed down in the base and coverings were secured on top of the base. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, quality technicians check the hardware for the Advanced Plant Habitat flight unit. The flight unit is an exact replica of the APH that was delivered to the International Space Station. Validation tests and post-delivery checkout was performed to prepare for space station in-orbit APH activities. The flight unit will be moved to the International Space Station Environment Simulator to begin an experiment verification test for the science that will fly on the first mission, PH-01. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the space station.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, quality technicians check components of the hardware for the Advanced Plant Habitat flight unit. The flight unit is an exact replica of the APH that was delivered to the International Space Station. Validation tests and post-delivery checkout was performed to prepare for space station in-orbit APH activities. The flight unit will be moved to the International Space Station Environmental Simulator to begin an experiment verification test for the science that will fly on the first mission, PH-01. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the space station.

Arabidopsis thaliana plants are seen inside the growth chamber of the Advanced Plant Habitat (APH) Flight Unit No. 1 prior to harvest of half the plants. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in NASA Kennedy Space Center's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

Inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, scientists prepare Apogee wheat seeds for the science carrier, or base, of the Advanced Plant Habitat (APH). A growing substrate called arcillite was packed down in the base and coverings were secured on top of the base. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, scientists prepare Apogee wheat seeds for the science carrier, or base, of the Advanced Plant Habitat (APH). A growing substrate called arcillite was packed down in the base and coverings were secured on top of the base. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, quality technicians check the hardware for the Advanced Plant Habitat flight unit. The flight unit is an exact replica of the APH that was delivered to the International Space Station. Validation tests and post-delivery checkout was performed to prepare for space station in-orbit APH activities. The flight unit will be moved to the International Space Station Environmental Simulator to begin an experiment verification test for the science that will fly on the first mission, PH-01. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the space station.

Inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, scientists prepare Apogee wheat seeds for the science carrier, or base, of the Advanced Plant Habitat (APH). A growing substrate called arcillite was packed down in the base and coverings were secured on top of the base. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Dr. Oscar Monje, a research scientist, packs a growing substrate called arcillite in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. Seated at right is Susan Manning-Roach, a quality assurance specialist on the Engineering Services Contract. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

John "JC" Carver, a payload integration engineer with NASA Kennedy Space Center's Test and Operations Support Contract, harvests half the Arabidopsis thaliana plants inside the growth chamber of the Advanced Plant Habitat (APH) Flight Unit No. 1. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in Kennedy's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a quality technician checks the hardware for the Advanced Plant Habitat flight unit. The flight unit is an exact replica of the APH that was delivered to the International Space Station. Validation tests and post-delivery checkout was performed to prepare for space station in-orbit APH activities. The flight unit will be moved to the International Space Station Environmental Simulator to begin an experiment verification test for the science that will fly on the first mission, PH-01. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the space station.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a quality technician checks the control panel on hardware for the Advanced Plant Habitat flight unit. The flight unit is an exact replica of the APH that was delivered to the International Space Station. Validation tests and post-delivery checkout was performed to prepare for space station in-orbit APH activities. The flight unit will be moved to the International Space Station Environmental Simulator to begin an experiment verification test for the science that will fly on the first mission, PH-01. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the space station.

A test unit, or prototype, of NASA's Advanced Plant Habitat (APH) was delivered to the Space Station Processing Facility at the agency's Kennedy Space Center in Florida. The APH is the largest plant chamber built for the agency. The unit is being prepared for engineering development tests to see how the science will integrate with the various systems of the plant habitat. It will have 180 sensors and four times the light output of Veggie. The APH will be delivered to the International Space Station in March 2017.

A test unit, or prototype, of NASA's Advanced Plant Habitat (APH) was delivered to the Space Station Processing Facility at the agency's Kennedy Space Center in Florida. The APH is the largest plant chamber built for the agency. The unit is being prepared for engineering development tests to see how the science will integrate with the various systems of the plant habitat. It will have 180 sensors and four times the light output of Veggie. The APH will be delivered to the International Space Station in March 2017.

NASA Administrator Jim Bridenstine, left, tours the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, on Aug. 7, 2018. Bryan Onate, at right, Advanced Plant Habitat (APH) project manager, explains a component of the APH control system. Bridenstine also received updates on research and technology accomplishments.

John "JC" Carver, a payload integration engineer with NASA Kennedy Space Center's Test and Operations Support Contract, uses a FluorPen to measure the chlorophyll fluorescence of Arabidopsis thaliana plants inside the growth chamber of the Advanced Plant Habitat (APH) Flight Unit No. 1. Half the plants were then harvested. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in Kennedy's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

Team members pause for a photo after the successful harvest of half the Arabidopsis thaliana plants inside the growth chamber of the Advanced Plant Habitat (APH) Flight Unit No. 1. From right to left are Jeff Richards with Stinger-Ghaffarian Technologies; David Hanson, part of the principal investigator's team; Oscar Monje with NASA Kennedy Space Center's Engineering Services Contract; and John "JC" Carver, a payload integration engineer with Kennedy's Test and Operations Support Contract. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in Kennedy's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

John "JC" Carver, a payload integration engineer with NASA Kennedy Space Center's Test and Operations Support Contract, places Arabidopsis thaliana plants harvested from the Advanced Plant Habitat (APH) Flight Unit No. 1 into an Ultra-low Freezer chilled to -150 degrees Celsius. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in Kennedy's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

John "JC" Carver, a payload integration engineer with NASA Kennedy Space Center's Test and Operations Support Contract, places Arabidopsis thaliana plants harvested from the Advanced Plant Habitat (APH) Flight Unit No. 1 into a Mini ColdBag that quickly freezes the plants. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in Kennedy's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

John "JC" Carver, a payload integration engineer with NASA Kennedy Space Center's Test and Operations Support Contract, opens the door to the growth chamber of the Advanced Plant Habitat (APH) Flight Unit No. 1 for a test harvest of half of the Arabidopsis thaliana plants growing within. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in Kennedy's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

Dr. Oscar Monje, (far right) a research scientist, packs a growing substrate called arcillite in the science carrier, or base, of the Advanced Plant Habitat (APH) inside a laboratory at the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. Assisting him is Jeffrey Richards, project science coordinator with SGT on the Engineering Services Contract (ESC). Seated in the foreground is Susan Manning-Roach, a quality assurance specialist, also with ESC. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the International Space Station. The APH will be delivered to the space station aboard future Commercial Resupply Services missions.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, LED plant growth lights are being checked out on the hardware for the Advanced Plant Habitat flight unit. The flight unit is an exact replica of the APH that was delivered to the International Space Station. Validation tests and post-delivery checkout was performed to prepare for space station in-orbit APH activities. The flight unit will be moved to the International Space Station Environmental Simulator to begin an experiment verification test for the science that will fly on the first mission, PH-01. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the space station.

John "JC" Carver, a payload integration engineer with NASA Kennedy Space Center's Test and Operations Support Contract, uses a FluorPen to measure the chlorophyll fluorescence of Arabidopsis thaliana plants inside the growth chamber of the Advanced Plant Habitat (APH) Flight Unit No. 1. Half the plants were then harvested. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in Kennedy's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

John "JC" Carver, a payload integration engineer with NASA Kennedy Space Center's Test and Operations Support Contract, opens the door to the growth chamber of the Advanced Plant Habitat (APH) Flight Unit No. 1 for a test harvest of half of the Arabidopsis thaliana plants growing within. The harvest is part of an ongoing verification test of the APH unit, which is located inside the International Space Station Environmental Simulator in Kennedy's Space Station Processing Facility. The APH undergoing testing at Kennedy is identical to one on the station and uses red, green and broad-spectrum white LED lights to grow plants in an environmentally controlled chamber. The seeds grown during the verification test will be grown on the station to help scientists understand how these plants adapt to spaceflight.

Inside a laboratory in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, LED plant growth lights are being checked out on the hardware for the Advanced Plant Habitat flight unit. The flight unit is an exact replica of the APH that was delivered to the International Space Station. Validation tests and post-delivery checkout was performed to prepare for space station in-orbit APH activities. The flight unit will be moved to the International Space Station Environmental Simulator to begin an experiment verification test for the science that will fly on the first mission, PH-01. Developed by NASA and ORBITEC of Madison, Wisconsin, the APH is the largest plant chamber built for the agency. It is a fully automated plant growth facility that will be used to conduct bioscience research on the space station.

From left, Oscar Monje, Ph.D., a plant physiologist with AECOM Management Services; and Alora Mazarakis, an electrical engineer with Techshot, prepare to harvest radish plants from the base of the Advanced Plant Habitat ground unit inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on June 13, 2019. The radishes are being harvested as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

A test unit, or prototype, of NASA's Advanced Plant Habitat (APH) was delivered to the Space Station Processing Facility at the agency's Kennedy Space Center in Florida. Inside a laboratory, Engineering Services Contract engineers set up test parameters on computers. From left, are Glenn Washington, ESC quality engineer; Claton Grosse, ESC mechanical engineer; and Jeff Richards, ESC project scientist. The APH is the largest plant chamber built for the agency. It will have 180 sensors and four times the light output of Veggie. The APH will be delivered to the International Space Station in March 2017.

From left are Ashleigh Ruggles, a launch operations support specialist with Techshot; Oscar Monje, Ph.D., a plant physiologist with AECOM Management Services; and Sam Logan, senior mechanical engineering technician; and Alora Mazarakis, an electrical engineer, both with Techshot. They are harvesting radish plants from the base of the Advanced Plant Habitat ground unit inside a laboratory in the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on June 13, 2019. The radishes are being harvested as part of a science verification test. The APH is currently the largest plant chamber built for the agency in use on the International Space Station. It is an autonomous plant growth facility that is being used to conduct bioscience research on the space station with the goal of enabling astronauts to be sustainable on long duration missions to the Moon, Mars and beyond.

NASA Administrator Jim Bridenstine, center, tours the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, on Aug. 7, 2018. At right, Bryan Onate, Advanced Plant Habitat (APH) project manager, explains a component of the APH cooling system. At left is Josie Burnett, director of Exploration Research and Technology. Bridenstine also received updates on research and technology accomplishments.

Chile pepper plants growing in the Advanced Plant Habitat (APH) aboard the International Space Station recently bore fruit. The peppers developed from flowers that bloomed over the past few weeks. Studies of fruit development in microgravity are limited, but overcoming the challenges of growing fruit in microgravity is important to NASA for long-duration missions during which crew members will need good sources of Vitamin C to supplement their diets.

Chile pepper plants growing in the Advanced Plant Habitat (APH) aboard the International Space Station recently bore fruit. The peppers developed from flowers that bloomed over the past few weeks. Studies of fruit development in microgravity are limited, but overcoming the challenges of growing fruit in microgravity is important to NASA for long-duration missions during which crew members will need good sources of Vitamin C to supplement their diets.

Chile pepper plants growing in the Advanced Plant Habitat (APH) aboard the International Space Station recently bore fruit. The peppers developed from flowers that bloomed over the past few weeks. Studies of fruit development in microgravity are limited, but overcoming the challenges of growing fruit in microgravity is important to NASA for long-duration missions during which crew members will need good sources of Vitamin C to supplement their diets.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

A view of radishes growing in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment. The experiment also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

A view of radishes growing in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment. The experiment also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

A view of radishes growing in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment. The experiment also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

A researcher prepares to harvest radishes grown in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment, which also involves growing two radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

Karl Hasenstein, the principal investigator for the Plant Habitat-02, or PH-02, plants radish seeds in seed carriers for the Addvanced Plant Habitat (APH) in the Space Life Sciences Lab at Kennedy Space Center on Sept. 23, 2020. The carriers will fly aboard Northrop Grumman’s 14th commercial resupply services mission to the International Space Station. The launch, aboard Northrop Grumman’s Cygnus spacecraft, is targeted for Sept. 29 from NASA’s Wallops Flight Facility in Virginia. Astronauts will grow radish plants in the APH, NASA’s largest and most advanced growth chamber on station.

A view of radishes growing in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment, which also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

Space crop production scientist Oscar Monje harvests Outredgeous romaine lettuce for preflight testing of the Plant Habitat-07 (PH-07) experiment inside a laboratory at the Space Systems Processing Facility at NASA’s Kennedy Space Center in Florida on Thursday, Aug. 29, 2024. PH-07 will be sent to the International Space Station on NASA’s SpaceX 31st commercial resupply services mission to study how optimal and suboptimal moisture conditions impact plant growth, nutrient content, and the plant microbiome.

Space crop production scientist Oscar Monje harvests Outredgeous romaine lettuce for preflight testing of the Plant Habitat-07 (PH-07) experiment inside a laboratory at the Space Systems Processing Facility at NASA’s Kennedy Space Center in Florida on Thursday, Aug. 29, 2024. PH-07 will be sent to the International Space Station on NASA’s SpaceX 31st commercial resupply services mission to study how optimal and suboptimal moisture conditions impact plant growth, nutrient content, and the plant microbiome.

Space crop production scientists Oscar Monje (left) and Blake Costine harvest Outredgeous romaine lettuce for preflight testing of the Plant Habitat-07 (PH-07) experiment inside a laboratory at the Space Systems Processing Facility at NASA’s Kennedy Space Center in Florida on Thursday, Aug. 29, 2024. PH-07 will be sent to the International Space Station on NASA’s SpaceX 31st commercial resupply services mission to study how optimal and suboptimal moisture conditions impact plant growth, nutrient content, and the plant microbiome.

Space crop production scientists Oscar Monje (left) and Blake Costine harvest Outredgeous romaine lettuce for preflight testing of the Plant Habitat-07 (PH-07) experiment inside a laboratory at the Space Systems Processing Facility at NASA’s Kennedy Space Center in Florida on Thursday, Aug. 29, 2024. PH-07 will be sent to the International Space Station on NASA’s SpaceX 31st commercial resupply services mission to study how optimal and suboptimal moisture conditions impact plant growth, nutrient content, and the plant microbiome.

Space crop production scientists inside a laboratory at the Space Systems Processing Facility at NASA’s Kennedy Space Center in Florida harvest Outredgeous romaine lettuce for preflight testing of the Plant Habitat-07 (PH-07) experiment on Thursday, Aug. 29, 2024. PH-07 will be sent to the International Space Station on NASA’s SpaceX 31st commercial resupply services mission to study how optimal and suboptimal moisture conditions impact plant growth, nutrient content, and the plant microbiome.

A research scientist collects measurements of radishes harvested from the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment, which also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

Dave Reed, Florida operations director for Techshot, Inc., observes radishes growing in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment. The experiment also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

A researcher from NASA’s Kennedy Space Center in Florida prepares pepper seeds for planting inside science carriers on April 8, 2021, inside the Space Life Sciences Lab for the Plant Habitat-04 (PH-04) experiment. The seeds will fly to the International Space Station on SpaceX’s 22nd Commercial Resupply Services (CRS-22) mission. When the experiment starts, astronauts will grow the pepper seeds in the Advanced Plant Habitat (APH) growth chamber, which will monitor the experiment with more than 180 sensors. The astronauts will observe plant growth for about four months and conduct two harvests to study whether microgravity affects growth, flavor, or texture. Since peppers take longer to germinate, grow, and develop than previous crops grown in space, the PH-04 experiment also will test the durability and reliability of the various systems within the APH.

Inside the Space Life Sciences Lab at NASA’s Kennedy Space Center in Florida, researchers plant pepper seeds in a science carrier on April 8, 2021, in preparation for the Plant Habitat-04 (PH-04) experiment. The seeds will fly to the International Space Station on SpaceX’s 22nd Commercial Resupply Services (CRS-22) mission. When the experiment starts, astronauts will grow the pepper seeds in the Advanced Plant Habitat (APH) growth chamber, which will monitor the experiment with more than 180 sensors. The astronauts will observe plant growth for about four months and conduct two harvests to study whether microgravity affects growth, flavor, or texture. Since peppers take longer to germinate, grow, and develop than previous crops grown in space, the PH-04 experiment also will test the durability and reliability of the various systems within the APH.

A research scientist harvests radishes grown in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment. The experiment also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

Dave Reed, Florida operations director for Techshot, Inc., observes radishes growing in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment, which also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

Inside the Space Life Sciences Lab at NASA’s Kennedy Space Center in Florida, a researcher plants pepper seeds in science carriers on April 8, 2021, in preparation for the Plant Habitat-04 (PH-04) experiment. The seeds will fly to the International Space Station on SpaceX’s 22nd Commercial Resupply Services (CRS-22) mission. When the experiment starts, astronauts will grow the pepper seeds in the Advanced Plant Habitat (APH) growth chamber, which will monitor the experiment with more than 180 sensors. The astronauts will observe plant growth for about four months and conduct two harvests to study whether microgravity affects growth, flavor, or texture. Since peppers take longer to germinate, grow, and develop than previous crops grown in space, the PH-04 experiment also will test the durability and reliability of the various systems within the APH.

A researcher from NASA’s Kennedy Space Center in Florida prepares pepper seeds for planting inside science carriers on April 8, 2021, inside the Space Life Sciences Lab for the Plant Habitat-04 (PH-04) experiment. The seeds will fly to the International Space Station on SpaceX’s 22nd Commercial Resupply Services (CRS-22) mission. When the experiment starts, astronauts will grow the pepper seeds in the Advanced Plant Habitat (APH) growth chamber, which will monitor the experiment with more than 180 sensors. The astronauts will observe plant growth for about four months and conduct two harvests to study whether microgravity affects growth, flavor, or texture. Since peppers take longer to germinate, grow, and develop than previous crops grown in space, the PH-04 experiment also will test the durability and reliability of the various systems within the APH.

A researcher takes measurements of a radish crop harvested from the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment, which also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

A researcher from NASA’s Kennedy Space Center in Florida prepares pepper seeds for planting inside science carriers on April 8, 2021, inside the Space Life Sciences Lab for the Plant Habitat-04 (PH-04) experiment. The seeds will fly to the International Space Station on SpaceX’s 22nd Commercial Resupply Services (CRS-22) mission. When the experiment starts, astronauts will grow the pepper seeds in the Advanced Plant Habitat (APH) growth chamber, which will monitor the experiment with more than 180 sensors. The astronauts will observe plant growth for about four months and conduct two harvests to study whether microgravity affects growth, flavor, or texture. Since peppers take longer to germinate, grow, and develop than previous crops grown in space, the PH-04 experiment also will test the durability and reliability of the various systems within the APH.

A close-up photo of a pepper seed prepared by researchers at NASA’s Kennedy Space Center in Florida is shown before it’s planted inside a science carrier on April 8, 2021, inside the Space Life Sciences Lab for the Plant Habitat-04 (PH-04) experiment. The seeds will fly to the International Space Station on SpaceX’s 22nd Commercial Resupply Services (CRS-22) mission. When the experiment starts, astronauts will grow the pepper seeds in the Advanced Plant Habitat (APH) growth chamber, which will monitor the experiment with more than 180 sensors. The astronauts will observe plant growth for about four months and conduct two harvests to study whether microgravity affects growth, flavor, or texture. Since peppers take longer to germinate, grow, and develop than previous crops grown in space, the PH-04 experiment also will test the durability and reliability of the various systems within the APH.

In view is the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. Part of the Plant Habitat-02 (PH-02) experiment, a ground control crop of radishes was grown at Kennedy and harvested on Dec. 14. The experiment also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

A research scientist harvests radishes grown in the Advanced Plant Habitat (APH) ground unit inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida on Dec. 14, 2020. The radishes are a ground control crop for the Plant Habitat-02 (PH-02) experiment. The experiment also involves growing two similar radish crops inside the International Space Station’s APH. NASA astronaut Kate Rubins harvested the first crop on Nov. 30, and the second harvest aboard the orbiting laboratory is planned for Dec. 30. Once samples return to Earth, researchers will compare those grown in space to the radishes grown here on Earth to better understand how microgravity affects plant growth.

jsc2022e072965 (3/17/2022) --- A view into NASA's Kennedy Space Center’s Advanced Plant Habitat (APH) during experiment verification testing for the Plant Habitat-03 investigation. The image shows the Arabidopsis plants growing in the APH just before the four seed bags are installed. The plants are just beginning to develop flower stalks. Image courtesy of Dr. Anna-Lisa Paul.

jsc2022e072963 (2/7/2022) --- A view into NASA's Kennedy Space Center’s Advanced Plant Habitat (APH) during experiment verification testing for the Plant Habitat-03 investigation. The image shows the Arabidopsis plants growing in the APH just before the four seed bags are installed. The plants are just beginning to develop flower stalks. Image courtesy of Dr. Anna-Lisa Paul.

(iss065e163671) July 12, 2021 --- NASA astronaut and Expedition 65 Flight Engineer Shane Kimbrough inserts a device called a science carrier into the Advanced Plant Habitat (APH), which contains 48 Hatch chile pepper seeds NASA started growing on July 12, 2021 as part of the Plant Habitat-04 experiment. Astronauts on station and a team of researchers at Kennedy will work together to monitor the peppers’ growth for about four months before harvesting them. This will be one of the longest and most challenging plant experiments attempted aboard the orbital lab.

(iss065e163669) July 12, 2021 --- NASA astronaut and Expedition 65 Flight Engineer Shane Kimbrough inserts a device called a science carrier into the Advanced Plant Habitat (APH), which contains 48 Hatch chili pepper seeds NASA started growing on July 12, 2021 as part of the Plant Habitat-04 experiment. Astronauts on station and a team of researchers at Kennedy will work together to monitor the peppers’ growth for about four months before harvesting them. This will be one of the longest and most challenging plant experiments attempted aboard the orbital lab.