Kirt Costello, chief scientist, International Space Station Program, Johnson Space Center, answers questions during a virtual prelaunch news conference Nov. 13, 2020, inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida ahead of the agency’s SpaceX Crew-1 launch. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

Kirt Costello, chief scientist, International Space Station Program, participates in the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. NASA astronauts Shane Kimbrough and  Megan McArthur, JAXA astronaut Akihiko Hoshide, and ESA astronaut Thomas Pesquet will fly on Crew-2, the second crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. They will launch aboard SpaceX’s Crew Dragon spacecraft, named Endeavour, powered by the company’s Falcon 9 rocket. Liftoff is set for Earth Day, Thursday, April 22, at 6:11 a.m. EDT.

Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, is introduced during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Sarah Walker, director, Dragon Mission Management, SpaceX, Kirt Costello, chief scientist, International Space Station Program Office, and Kenny Todd, deputy program manager, International Space Station Program Office, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, responds to a question during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Sarah Walker, director, Dragon Mission Management, SpaceX, Kirt Costello, chief scientist, International Space Station Program Office, and Kenny Todd, deputy program manager, International Space Station Program Office, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

Kenny Todd, deputy program manager, International Space Station Program Office, listens to a question during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Kirt Costello, chief scientist, International Space Station Program Office; Sarah Walker, director, Dragon Mission Management, SpaceX; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

Kenny Todd, deputy program manager, International Space Station Program Office, is introduced during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Kirt Costello, chief scientist, International Space Station Program Office; Sarah Walker, director, Dragon Mission Management, SpaceX; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

Sarah Walker, director, Dragon Mission Management, SpaceX, listens to a question during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Kirt Costello, chief scientist, International Space Station Program Office, Kenny Todd, deputy program manager, International Space Station Program Office; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

Sarah Walker, director, Dragon Mission Management, SpaceX, is introduced during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Kirt Costello, chief scientist, International Space Station Program Office, Kenny Todd, deputy program manager, International Space Station Program Office; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

From left, Kenny Todd, deputy program manager, International Space Station Program Office; Kirt Costello, chief scientist, International Space Station Program Office; Sarah Walker, director, Dragon Mission Management, SpaceX; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, participate in a CRS-21 prelaunch news conference at Kennedy Space Center in Florida on Dec. 4, 2020. NASA Communications’ Jasmine Hopkins moderated the event. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

Kirt Costello, chief scientist, International Space Station Program Office, listens to a question during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Kenny Todd, deputy program manager, International Space Station Program Office; Sarah Walker, director, Dragon Mission Management, SpaceX; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

Kirt Costello, chief scientist, International Space Station Program Office, is introduced during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Kenny Todd, deputy program manager, International Space Station Program Office; Sarah Walker, director, Dragon Mission Management, SpaceX; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

NASA Communications’ Jasmine Hopkins moderates a CRS-21 prelaunch news conference at Kennedy Space Center in Florida on Dec. 4, 2020. Participants included Kenny Todd, deputy program manager, International Space Station Program Office; Kirt Costello, chief scientist, International Space Station Program Office; Sarah Walker, director, Dragon Mission Management, SpaceX; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

NASA Communications’ Jasmine Hopkins moderates a CRS-21 prelaunch news conference at Kennedy Space Center in Florida on Dec. 4, 2020. Participants included Kenny Todd, deputy program manager, International Space Station Program Office; Kirt Costello, chief scientist, International Space Station Program Office; Sarah Walker, director, Dragon Mission Management, SpaceX; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

Sarah Walker, director, Dragon Mission Management, SpaceX, responds to a question during a CRS-21 prelaunch news conference at NASA’s Kennedy Space Center in Florida on Dec. 4, 2020. Kirt Costello, chief scientist, International Space Station Program Office, Kenny Todd, deputy program manager, International Space Station Program Office; and Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing, also participated in the event, which was moderated by NASA Communications’ Jasmine Hopkins. SpaceX’s Falcon 9 rocket, with the upgraded version of the Cargo Dragon spacecraft atop, is targeted to lift off from Kennedy’s Launch Complex 39A Saturday, Dec. 5, at 11:39 a.m. EST. CRS-21 will deliver supplies, equipment, and critical materials needed to support a variety of science and research investigations on the International Space Station.

In the Kennedy Space Center’s Press Site auditorium, Kirt Costello, International Space Station program chief scientist at NASA's Johnson Space Center in Houston, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-16 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station. The SpaceX Falcon 9 rocket will lift off on the company's 16th Commercial Resupply Services mission to the space station.

Dr. Kirt Costello, chief scientist for the International Space Station Program at NASA’s Johnson Space Center in Houston, speaks to members of the media in the Kennedy Space Center’s Press Site auditorium. The briefing focused on research planned for launch to the International Space Station. The scientific materials and supplies will be aboard a Dragon spacecraft scheduled for liftoff from Cape Canaveral Air Force Station's Space Launch Complex 40. The SpaceX Falcon 9 rocket will launch the company's 16th Commercial Resupply Services mission to the space station.

Marie Lewis, NASA Communications, moderates the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. Participants included: Steve Stich, manager, NASA Commercial Crew Program; Joel Montalbano, manager, International Space Station Program; Benji Reed, senior director, Human Spaceflight Programs, SpaceX; Norm Knight, deputy manager, Flight Operations Directorate; Junichi Sakai, manager, International Space Station Program, JAXA; Frank de Winne, manager, International Space Station Program, ESA; Kirt Costello, chief scientist, International Space Station Program; and Brian Cizek, launch weather officer, 45th Weather Squadron, U.S. Space Force.

A SpaceX Crew-2 prelaunch news conference was held at NASA’s Kennedy Space Center in Florida on April 20, 2021. Participants included, from left to right: Steve Stich, manager, NASA Commercial Crew Program; Joel Montalbano, manager, International Space Station Program; Benji Reed, senior director, Human Spaceflight Programs, SpaceX; Norm Knight, deputy manager, Flight Operations Directorate; Junichi Sakai, manager, International Space Station Program, JAXA; Frank de Winne, manager, International Space Station Program, ESA; Kirt Costello, chief scientist, International Space Station Program; and Brian Cizek, launch weather officer, 45th Weather Squadron, U.S. Space Force.

In the Kennedy Space Center’s Press Site auditorium, Jessica Jensen, SpaceX director of Dragon Mission Management, left, and Kirt Costello, deputy chief scientist for the International Space Station Program Science Office at NASA’s Johnson Space Center in Houston, speak to members of the media during a prelaunch news conference for the SpaceX CRS-13 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station at 11:46 a.m. EST, on Dec. 12, 2017. The SpaceX Falcon 9 rocket will lift off on the company's 13th Commercial Resupply Services mission to the space station.

Dr. Kirt Costello, chief scientist for the ISS Program at NASA’s Johnson Space Center in Houston, talks to NASA Social participants during a What’s On Board science briefing at the agency’s Kennedy Space Center in Florida on April 29, 2019. The briefing was held for SpaceX’s 17th Commercial Resupply Services (CRS-17) mission to the International Space Station. The SpaceX Falcon 9 rocket and Dragon cargo module are scheduled to launch no earlier than May 3, 2019, from Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida.

Dr. Kirt Costello, chief scientist for the ISS Program at NASA’s Johnson Space Center in Houston, talks to NASA Social participants during a What’s On Board science briefing at the agency’s Kennedy Space Center in Florida on April 29, 2019. The briefing was held for SpaceX’s 17th Commercial Resupply Services (CRS-17) mission to the International Space Station. The SpaceX Falcon 9 rocket and Dragon cargo module are scheduled to launch no earlier than May 3, 2019, from Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida.

Dr. Kirt Costello, chief scientist for the ISS Program at NASA’s Johnson Space Center in Houston, talks to NASA Social participants during a What’s On Board science briefing at the agency’s Kennedy Space Center in Florida on April 29, 2019. The briefing was held for SpaceX’s 17th Commercial Resupply Services (CRS-17) mission to the International Space Station. The SpaceX Falcon 9 rocket and Dragon cargo module are scheduled to launch no earlier than May 3, 2019, from Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida.

Kirt Costello, deputy chief scientist for the International Space Station Program at NASA’s Johnson Space Center in Houston, speaks to members of social media in the Kennedy Space Center’s Press Site auditorium. The briefing focused on research planned for launch to the International Space Station. The scientific materials and supplies will be aboard a Dragon spacecraft scheduled for liftoff from Cape Canaveral Air Force Station's Space Launch Complex 40 at 11:46 a.m. EST, on Dec. 12, 2017. The SpaceX Falcon 9 rocket will launch the company's 13th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Kirt Costello, deputy chief scientist for the International Space Station Program Science Office at NASA’s Johnson Space Center in Houston, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-13 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station at 11:46 a.m. EST, on Dec. 12, 2017. The SpaceX Falcon 9 rocket will lift off on the company's 13th Commercial Resupply Services mission to the space station.

Inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida, NASA and industry leaders conduct a virtual prelaunch news conference Nov. 13, 2020, ahead of the agency’s SpaceX Crew-1 mission. From left are Steve Stich, manager, Commercial Crew Program, Kennedy Space Center; Joel Montalbano, manager, International Space Station, Johnson Space Center; Kirt Costello, chief scientist, International Space Station Program, Johnson; Norm Knight, deputy manager, Flight Operations Directorate, Johnson; Arlena Moses, launch weather officer, U.S. Air Force 45th Weather Squadron; and Benji Reed, senior director, Human Spaceflight Programs, SpaceX. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

Inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida, NASA and industry leaders conduct a virtual prelaunch news conference Nov. 13, 2020, ahead of the agency’s SpaceX Crew-1 mission. From left are Steve Stich, manager, Commercial Crew Program, Kennedy Space Center; Joel Montalbano, manager, International Space Station, Johnson Space Center; Kirt Costello, chief scientist, International Space Station Program, Johnson; Norm Knight, deputy manager, Flight Operations Directorate, Johnson; Arlena Moses, launch weather officer, U.S. Air Force 45th Weather Squadron; and Benji Reed, senior director, Human Spaceflight Programs, SpaceX. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

In the Kennedy Space Center’s Press Site auditorium, agency and industry leaders speak to members of the media during a prelaunch news conference for the SpaceX CRS-16 commercial resupply services mission to the International Space Station. From left are: Tori McLendon of NASA Communications, Joel Montalbano, deputy International Space Station program manager at NASA's Johnson Space Center in Houston, Hans Koenigsmann, vice president of Build and Flight Reliability for SpaceX, Kirt Costello, International Space Station program chief scientist at Johnson, and Clay Flinn, launch weather officer for the U.S. Air Force 45th Space Wing at Cape Canaveral Air Force Station. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station. The SpaceX Falcon 9 rocket will lift off on the company's 16th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, NASA and industry leaders speak to members of the media during a prelaunch news conference for the SpaceX CRS-13 commercial resupply services mission to the International Space Station. From left are: Cheryl Warner of NASA Communications, Jessica Jensen, SpaceX director of Dragon Mission Management, Kirt Costello, deputy chief scientist for the International Space Station Program Science Office at NASA’s Johnson Space Center in Houston, and Lt. David Myers, weather officer for the 45th Weather Squadron. Kirk Shireman, International Space Station Program manager at Johnson, participated by video link. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station at 11:46 a.m. EST, on Dec. 12, 2017. The SpaceX Falcon 9 rocket will lift off on the company's 13th Commercial Resupply Services mission to the space station.

Cheryl Warner of NASA Communications, left, Kirt Costello, deputy chief scientist for the International Space Station Program at NASA’s Johnson Space Center in Houston, center, and Patrick O'Neill, Marketing and Communications manager at the Center of Advancement of Science in Space (CASIS), speak to members of social media in the Kennedy Space Center’s Press Site auditorium. The briefing focused on research planned for launch to the International Space Station. The scientific materials and supplies will be aboard a Dragon spacecraft scheduled for liftoff from Cape Canaveral Air Force Station's Space Launch Complex 40 at 11:46 a.m. EST, on Dec. 12, 2017. The SpaceX Falcon 9 rocket will launch the company's 13th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, NASA and industry leaders speak to members of the media during a prelaunch news conference for the SpaceX CRS-13 commercial resupply services mission to the International Space Station. From left are: Cheryl Warner of NASA Communications, Jessica Jensen, SpaceX director of Dragon Mission Management, Kirt Costello, deputy chief scientist for the International Space Station Program Science Office at NASA’s Johnson Space Center in Houston, and Lt. David Myers, weather officer for the 45th Weather Squadron. Kirk Shireman, International Space Station Program manager at Johnson, participated by video link. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station at 11:46 a.m. EST, on Dec. 12, 2017. The SpaceX Falcon 9 rocket will lift off on the company's 13th Commercial Resupply Services mission to the space station.

Junichi Sakai, manager, International Space Station Program, JAXA, participates in the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. NASA astronauts Shane Kimbrough and  Megan McArthur, JAXA astronaut Akihiko Hoshide, and ESA astronaut Thomas Pesquet will fly on Crew-2, the second crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. They will launch aboard SpaceX’s Crew Dragon spacecraft, named Endeavour, powered by the company’s Falcon 9 rocket. Liftoff is set for Earth Day, Thursday, April 22, at 6:11 a.m. EDT.

Steve Stich, manager, Commercial Crew Program, Kennedy Space Center, answers questions during a virtual prelaunch news conference Nov. 13, 2020, inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida ahead of the agency’s SpaceX Crew-1 launch. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

Benji Reed, senior director, Human Spaceflight Programs, SpaceX, answers questions during a virtual prelaunch news conference Nov. 13, 2020, inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida ahead of the agency’s SpaceX Crew-1 launch. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

Benji Reed, senior director, Human Spaceflight Programs, SpaceX, is introduced during the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. NASA astronauts Shane Kimbrough and  Megan McArthur, JAXA astronaut Akihiko Hoshide, and ESA astronaut Thomas Pesquet will fly on Crew-2, the second crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. They will launch aboard SpaceX’s Crew Dragon spacecraft, named Endeavour, powered by the company’s Falcon 9 rocket. Liftoff is set for Earth Day, Thursday, April 22, at 6:11 a.m. EDT.

Kyle Herring, NASA Communications, moderates a virtual prelaunch news conference Nov. 13, 2020, inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida ahead of the agency’s SpaceX Crew-1 launch. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

Norm Knight, deputy manager, Flight Operations Directorate, participates in the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. NASA astronauts Shane Kimbrough and  Megan McArthur, JAXA astronaut Akihiko Hoshide, and ESA astronaut Thomas Pesquet will fly on Crew-2, the second crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. They will launch aboard SpaceX’s Crew Dragon spacecraft, named Endeavour, powered by the company’s Falcon 9 rocket. Liftoff is set for Earth Day, Thursday, April 22, at 6:11 a.m. EDT.

Brian Cizek, launch weather officer, 45th Weather Squadron, U.S. Space Force, participates in the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. NASA astronauts Shane Kimbrough and  Megan McArthur, JAXA astronaut Akihiko Hoshide, and ESA astronaut Thomas Pesquet will fly on Crew-2, the second crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. They will launch aboard SpaceX’s Crew Dragon spacecraft, named Endeavour, powered by the company’s Falcon 9 rocket. Liftoff is set for Earth Day, Thursday, April 22, at 6:11 a.m. EDT.

Joel Montalbano, manager, International Space Station, Johnson Space Center, answers questions during a virtual prelaunch news conference Nov. 13, 2020, inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida ahead of the agency’s SpaceX Crew-1 launch. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

Arlena Moses, launch weather officer, U.S. Air Force 45th Weather Squadron, answers questions during a virtual prelaunch news conference Nov. 13, 2020, inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida ahead of the agency’s SpaceX Crew-1 launch. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

Steve Stich, manager, NASA Commercial Crew Program, is introduced during the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. NASA astronauts Shane Kimbrough and  Megan McArthur, JAXA astronaut Akihiko Hoshide, and ESA astronaut Thomas Pesquet will fly on Crew-2, the second crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. They will launch aboard SpaceX’s Crew Dragon spacecraft, named Endeavour, powered by the company’s Falcon 9 rocket. Liftoff is set for Earth Day, Thursday, April 22, at 6:11 a.m. EDT.

Joel Montalbano, manager, International Space Station Program, is introduced during the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. NASA astronauts Shane Kimbrough and  Megan McArthur, JAXA astronaut Akihiko Hoshide, and ESA astronaut Thomas Pesquet will fly on Crew-2, the second crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. They will launch aboard SpaceX’s Crew Dragon spacecraft, named Endeavour, powered by the company’s Falcon 9 rocket. Liftoff is set for Earth Day, Thursday, April 22, at 6:11 a.m. EDT.

Norm Knight, deputy manager, Flight Operations Directorate, Johnson Space Center, answers questions during a virtual prelaunch news conference Nov. 13, 2020, inside the Press Site auditorium at NASA’s Kennedy Space Center in Florida ahead of the agency’s SpaceX Crew-1 launch. Crew-1 is the first regular crew mission of a U.S. commercial spacecraft with astronauts to the International Space Station as part of NASA’s Commercial Crew Program. The SpaceX Crew Dragon Resilience capsule will launch atop the company’s Falcon 9 rocket from Launch Complex 39A to the space station for a six-month science mission.

Frank de Winne, manager, International Space Station Program, ESA, participates in the SpaceX Crew-2 prelaunch news conference held at NASA’s Kennedy Space Center in Florida on April 20, 2021. NASA astronauts Shane Kimbrough and  Megan McArthur, JAXA astronaut Akihiko Hoshide, and ESA astronaut Thomas Pesquet will fly on Crew-2, the second crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. They will launch aboard SpaceX’s Crew Dragon spacecraft, named Endeavour, powered by the company’s Falcon 9 rocket. Liftoff is set for Earth Day, Thursday, April 22, at 6:11 a.m. EDT.