
In the Kennedy Space Center’s Press Site auditorium, Mike McAleenan, launch weather officer for the U.S. Air Force 45th Weather Squadron, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-11 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on June 1 atop a SpaceX Falcon 9 rocket on the company's 11th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, David Brady, assistant program scientist for the International Space Station Program, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-15 Commercial Resupply Services mission to the International Space Station. A SpaceX 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 15th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Cheryl Warner of NASA Communications 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.

In the Kennedy Space Center’s Press Site auditorium, Camille Alleyne, associate program scientist for the International Space Station at NASA’s Johnson Space Center, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-11 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on June 1 atop a SpaceX Falcon 9 rocket on the company's 11th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Hans Koenigsmann, vice president of Flight Reliability for SpaceX, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-11 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on June 1 atop a SpaceX Falcon 9 rocket on the company's 11th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Kirk Shireman, manager of the International Space Station Program, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-15 Commercial Resupply Services mission to the International Space Station. A SpaceX 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 15th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Pete Hasbrook, associate program scientist for the International Space Station Program, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-12 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on Aug. 14 atop a SpaceX Falcon 9 rocket on the company's 12th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, members of the media participate with NASA and industry leaders in 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.

In the Kennedy Space Center’s Press Site auditorium, Dan Hartman, NASA deputy manager of the International Space Station Program, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-12 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on Aug. 14 atop a SpaceX Falcon 9 rocket on the company's 12th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Jessica Jensen, director of Dragon Mission Management for SpaceX, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-15 Commercial Resupply Services mission to the International Space Station. A SpaceX 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 15th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Hans Koenigsmann, vice president of Build and Flight Reliability for SpaceX, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-12 commercial resupply services mission to the International Space Station. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on Aug. 14 atop a SpaceX Falcon 9 rocket on the company's 12th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Stephanie Schierholz of NASA Communications, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-15 Commercial Resupply Services mission to the International Space Station. A SpaceX 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 15th Commercial Resupply Services mission to the space station.

A SpaceX Falcon 9 rocket, topped with the upgraded version of the Cargo Dragon spacecraft, is seen inside the company’s hangar at NASA’s Kennedy Space Center in Florida on Dec. 2, 2020, prior to being rolled out to the launch pad in preparation for the 21st Commercial Resupply Services (CRS-21) launch. The first launch for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 will deliver critical supplies, equipment, and material to support a variety of science and research investigations that will take place aboard the International Space Station. Liftoff is scheduled for 11:39 a.m. EST on Saturday, Dec. 5, from Kennedy’s Launch Complex 39A.

A SpaceX Falcon 9 rocket, topped with the upgraded version of the Cargo Dragon spacecraft, is seen inside the company’s hangar at NASA’s Kennedy Space Center in Florida on Dec. 2, 2020, prior to being rolled out to the launch pad in preparation for the 21st Commercial Resupply Services (CRS-21) launch. The first launch for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 will deliver critical supplies, equipment, and material to support a variety of science and research investigations that will take place aboard the International Space Station. Liftoff is scheduled for 11:39 a.m. EST on Saturday, Dec. 5, from Kennedy’s Launch Complex 39A.

The upgraded version of SpaceX’s Cargo Dragon spacecraft, Dragon 2, is seen atop a Falcon 9 rocket on Dec. 2, 2020, as they prepare to be rolled out to Launch Complex 39A at NASA’s Kennedy Space Center in Florida for the company’s 21st Commercial Resupply Services (CRS-21) launch. The first launch for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 will deliver critical supplies, equipment, and material to support a variety of science and research investigations that will take place aboard the International Space Station. Liftoff is scheduled for 11:39 a.m. EST on Saturday, Dec. 5.

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.

In the Kennedy Space Center’s Press Site auditorium, Jessica Jensen, SpaceX director of Dragon Mission Management, 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.

In the Kennedy Space Center’s Press Site auditorium, Lt. David Myers, weather officer for the 45th Weather Squadron, 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.

In the Kennedy Space Center’s Press Site auditorium, Mike McAleenan, launch weather officer for the U.S. Air Force 45th Weather Squadron at Cape Canaveral Air Force Station, speaks to members of the media during a prelaunch news conference for the SpaceX CRS-15 Commercial Resupply Services mission to the International Space Station. A SpaceX 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 15th Commercial Resupply Services mission to the space station.

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-12 commercial resupply services mission to the International Space Station. From left are: Josh Finch of NASA Communications; Dan Hartman, NASA deputy manager of the International Space Station Program, Hans Koenigsmann, vice president of Build and Flight Reliability for SpaceX, and Pete Hasbrook, associate program scientist for the International Space Station Program. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on Aug. 14 atop a SpaceX Falcon 9 rocket on the company's 12th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Kirk Shireman, International Space Station Program manager at Johnson, participates by video link speaking 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.

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.

In the Kennedy Space Center’s Press Site auditorium, Kirk Shireman, manager of the International Space Station Program, left, and Jessica Jensen, director of Dragon Mission Management for SpaceX, speak to members of the media during a prelaunch news conference for the SpaceX CRS-15 Commercial Resupply Services mission to the International Space Station. A SpaceX 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 15th Commercial Resupply Services mission to the space station.

In the Kennedy Space Center’s Press Site auditorium, Lt. David Myers, weather officer for the 45th Weather Squadron, 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.

CAPE CANAVERAL, Fla. - Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida comes alive as the Merlin engines ignite under the Falcon 9 rocket carrying a Dragon capsule to orbit. Liftoff was at 8:35 p.m. EDT. Space Exploration Technologies Corp., or SpaceX, built both the rocket and capsule for NASA's first Commercial Resupply Services, or CRS-1, mission to the International Space Station. SpaceX CRS-1 is an important step toward making America’s microgravity research program self-sufficient by providing a way to deliver and return significant amounts of cargo, including science experiments, to and from the orbiting laboratory. NASA has contracted for 12 commercial resupply flights from SpaceX and eight from the Orbital Sciences Corp. For more information, visit http://www.nasa.gov/mission_pages/station/living/launch/index.html Photo credit: NASA/ Rick Wetherington and Tim Powers

CAPE CANAVERAL, Fla. - Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida comes alive as the Merlin engines ignite under the Falcon 9 rocket carrying a Dragon capsule to orbit. Liftoff was at 8:35 p.m. EDT. Space Exploration Technologies Corp., or SpaceX, built both the rocket and capsule for NASA's first Commercial Resupply Services, or CRS-1, mission to the International Space Station. SpaceX CRS-1 is an important step toward making America’s microgravity research program self-sufficient by providing a way to deliver and return significant amounts of cargo, including science experiments, to and from the orbiting laboratory. NASA has contracted for 12 commercial resupply flights from SpaceX and eight from the Orbital Sciences Corp. For more information, visit http://www.nasa.gov/mission_pages/station/living/launch/index.html Photo credit: NASA/ Rick Wetherington and Tim Powers

CAPE CANAVERAL, Fla. - Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida comes alive as the Merlin engines ignite under the Falcon 9 rocket carrying a Dragon capsule to orbit. Liftoff was at 8:35 p.m. EDT. Space Exploration Technologies Corp., or SpaceX, built both the rocket and capsule for NASA's first Commercial Resupply Services, or CRS-1, mission to the International Space Station. SpaceX CRS-1 is an important step toward making America’s microgravity research program self-sufficient by providing a way to deliver and return significant amounts of cargo, including science experiments, to and from the orbiting laboratory. NASA has contracted for 12 commercial resupply flights from SpaceX and eight from the Orbital Sciences Corp. For more information, visit http://www.nasa.gov/mission_pages/station/living/launch/index.html Photo credit: NASA/ Rick Wetherington and Tim Powers

CAPE CANAVERAL, Fla. - Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida comes alive as the Merlin engines ignite under the Falcon 9 rocket carrying a Dragon capsule to orbit. Liftoff was at 8:35 p.m. EDT. Space Exploration Technologies Corp., or SpaceX, built both the rocket and capsule for NASA's first Commercial Resupply Services, or CRS-1, mission to the International Space Station. SpaceX CRS-1 is an important step toward making America’s microgravity research program self-sufficient by providing a way to deliver and return significant amounts of cargo, including science experiments, to and from the orbiting laboratory. NASA has contracted for 12 commercial resupply flights from SpaceX and eight from the Orbital Sciences Corp. For more information, visit http://www.nasa.gov/mission_pages/station/living/launch/index.html Photo credit: NASA/ Rick Wetherington and Tim Powers

CAPE CANAVERAL, Fla. - Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida comes alive as the Merlin engines ignite under the Falcon 9 rocket carrying a Dragon capsule to orbit. Liftoff was at 8:35 p.m. EDT. Space Exploration Technologies Corp., or SpaceX, built both the rocket and capsule for NASA's first Commercial Resupply Services, or CRS-1, mission to the International Space Station. SpaceX CRS-1 is an important step toward making America’s microgravity research program self-sufficient by providing a way to deliver and return significant amounts of cargo, including science experiments, to and from the orbiting laboratory. NASA has contracted for 12 commercial resupply flights from SpaceX and eight from the Orbital Sciences Corp. For more information, visit http://www.nasa.gov/mission_pages/station/living/launch/index.html Photo credit: NASA/ Rick Wetherington and Tim Powers

CAPE CANAVERAL, Fla. - Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida comes alive as the Merlin engines ignite under the Falcon 9 rocket carrying a Dragon capsule to orbit. Liftoff was at 8:35 p.m. EDT. Space Exploration Technologies Corp., or SpaceX, built both the rocket and capsule for NASA's first Commercial Resupply Services, or CRS-1, mission to the International Space Station. SpaceX CRS-1 is an important step toward making America’s microgravity research program self-sufficient by providing a way to deliver and return significant amounts of cargo, including science experiments, to and from the orbiting laboratory. NASA has contracted for 12 commercial resupply flights from SpaceX and eight from the Orbital Sciences Corp. For more information, visit http://www.nasa.gov/mission_pages/station/living/launch/index.html Photo credit: NASA/ Rick Wetherington and Tim Powers

CAPE CANAVERAL, Fla. - Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida comes alive as the Merlin engines ignite under the Falcon 9 rocket carrying a Dragon capsule to orbit. Liftoff was at 8:35 p.m. EDT. Space Exploration Technologies Corp., or SpaceX, built both the rocket and capsule for NASA's first Commercial Resupply Services, or CRS-1, mission to the International Space Station. SpaceX CRS-1 is an important step toward making America’s microgravity research program self-sufficient by providing a way to deliver and return significant amounts of cargo, including science experiments, to and from the orbiting laboratory. NASA has contracted for 12 commercial resupply flights from SpaceX and eight from the Orbital Sciences Corp. For more information, visit http://www.nasa.gov/mission_pages/station/living/launch/index.html Photo credit: NASA/ Rick Wetherington and Tim Powers

CAPE CANAVERAL, Fla. - Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida comes alive as the Merlin engines ignite under the Falcon 9 rocket carrying a Dragon capsule to orbit. Liftoff was at 8:35 p.m. EDT. Space Exploration Technologies Corp., or SpaceX, built both the rocket and capsule for NASA's first Commercial Resupply Services, or CRS-1, mission to the International Space Station. SpaceX CRS-1 is an important step toward making America’s microgravity research program self-sufficient by providing a way to deliver and return significant amounts of cargo, including science experiments, to and from the orbiting laboratory. NASA has contracted for 12 commercial resupply flights from SpaceX and eight from the Orbital Sciences Corp. For more information, visit http://www.nasa.gov/mission_pages/station/living/launch/index.html Photo credit: NASA/ Rick Wetherington and Tim Powers

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kenney Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 12:31 p.m. EDT. On its 12th commercial resupply services mission to the space station, Dragon will bring up more than 6,400 pounds of supplies. The historic launch site now is operated by SpaceX under a property agreement signed with NASA.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 12:31 p.m. EDT. On its 12th commercial resupply services mission to the space station, Dragon will bring up more than 6,400 pounds of supplies. The historic launch site now is operated by SpaceX under a property agreement signed with NASA.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 12:31 p.m. EDT. On its 12th commercial resupply services mission to the space station, Dragon will bring up more than 6,400 pounds of supplies. The historic launch site now is operated by SpaceX under a property agreement signed with NASA.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kenney Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kenney Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

As a Falcon 9 rocket is raised into positon for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kenney Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kenney Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 12:31 p.m. EDT. On its 12th commercial resupply services mission to the space station, Dragon will bring up more than 6,400 pounds of supplies. The historic launch site now is operated by SpaceX under a property agreement signed with NASA.

As a Falcon 9 rocket is raised into positon for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kenney Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kenney Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

As a Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 5:55 p.m. EDT. On its 11th commercial resupply services mission to the space station, Dragon will bring up 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, instrument to study the extraordinary physics of neutron stars.

The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kennedy Space Center carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 12:31 p.m. EDT. On its 12th commercial resupply services mission to the International Space Station, Dragon will bring up more than 6,400 pounds of supplies and new science experiments and equipment for technology research.

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-11 commercial resupply services mission to the International Space Station. From left are: Mike Curie of NASA Communications, Kirk Shireman, NASA's International Space Station Program manager, Hans Koenigsmann, vice president of Flight Reliability for SpaceX, Camille Alleyne, associate program scientist for the International Space Station at NASA’s Johnson Space Center, and Mike McAleenan, launch weather officer for the U.S. Air Force 45th Weather Squadron. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on June 1 atop a SpaceX Falcon 9 rocket on the company's 11th Commercial Resupply Services mission to the space station.

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-11 commercial resupply services mission to the International Space Station. From left are: Mike Curie of NASA Communications, Kirk Shireman, NASA's International Space Station Program manager, Hans Koenigsmann, vice president of Flight Reliability for SpaceX, Camille Alleyne, associate program scientist for the International Space Station at NASA’s Johnson Space Center, and Mike McAleenan, launch weather officer for the U.S. Air Force 45th Weather Squadron. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on June 1 atop a SpaceX Falcon 9 rocket on the company's 11th 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.

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.

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-15 Commercial Resupply Services mission to the International Space Station. From left are: Stephanie Schierholz of NASA Communications,Kirk Shireman, NASA manager of the International Space Station Program, Jessica Jensen, director of Dragon Mission Management for SpaceX, Mike McAleenan, launch weather officer for the U.S. Air Force 45th Weather Squadron at Cape Canaveral Air Force Station, and David Brady, assistant program scientist for the International Space Station Program. A SpaceX 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 15th Commercial Resupply Services mission to the space station.

In the Press Site auditorium of NASA's Kennedy Space Center in Florida, Pam Underwood, manager of the Operations Integration Division of the Federal Aviation Administration Office of Commercial Space Transportation, speaks to the news media at a post-launch news conference following the liftoff of SpaceX CRS-10, a commercial resupply services mission to the International Space Station. SpaceX CRS-10 lifted off atop a Falcon 9 rocket from Kennedy's Launch Complex 39A at 9:39 a.m. EST.

A SpaceX Falcon 9 rocket, topped with the company’s upgraded version of the Dragon spacecraft, stands vertical at NASA Kennedy Space Center’s Launch Complex 39A in Florida on Wednesday, Dec. 2, 2020. The first mission for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 is scheduled to lift off from Launch Complex 39A on Saturday, Dec. 5, at 11:39 a.m. EST. The mission will deliver critical supplies and equipment to the International Space Station.

A SpaceX Falcon 9 rocket, topped with the company’s upgraded version of the Dragon spacecraft, stands vertical at NASA Kennedy Space Center’s Launch Complex 39A in Florida on Wednesday, Dec. 2, 2020. The first mission for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 is scheduled to lift off from Launch Complex 39A on Saturday, Dec. 5, at 11:39 a.m. EST. The mission will deliver critical supplies and equipment to the International Space Station.

A SpaceX Falcon 9 rocket, topped with the company’s upgraded version of the Dragon spacecraft, stands vertical at NASA Kennedy Space Center’s Launch Complex 39A in Florida on Wednesday, Dec. 2, 2020. The first mission for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 is scheduled to lift off from Launch Complex 39A on Saturday, Dec. 5, at 11:39 a.m. EST. The mission will deliver critical supplies and equipment to the International Space Station.

A SpaceX Falcon 9 rocket, topped with the company’s upgraded version of the Dragon spacecraft, stands vertical at NASA Kennedy Space Center’s Launch Complex 39A in Florida on Wednesday, Dec. 2, 2020. The first mission for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 is scheduled to lift off from Launch Complex 39A on Saturday, Dec. 5, at 11:39 a.m. EST. The mission will deliver critical supplies and equipment to the International Space Station.

A Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The historic launch site now is operated by SpaceX under a property agreement signed with NASA. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 10:01 a.m. EST on Feb. 18. On its 10th commercial resupply services mission to the space station, Dragon will bring up 5,000 pounds of supplies, such as the Stratospheric Aerosol and Gas Experiment (SAGE) III instrument to further study ozone in the atmosphere. Once mounted on the space station, SAGE III will measure the Earth’s sunscreen, or ozone, along with other gases and aerosols, or tiny particles in the atmosphere.

A Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. In this aerial view, stands on the launch pad with the Vehicle Assembly Building (VAB) in the background. To the right of the VAB is the mobile launcher that will be used for stacking NASA's Space Launch System rocket which will send the agency's Orion spacecraft on missions beyond low-Earth orbit. The Falcon 9 will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 9:39 a.m. EST. Dragon will bring up 5,500 pounds of supplies, on its 10th commercial resupply services mission to the space station.

A Falcon 9 rocket stands ready for liftoff at the Kennedy Space Center's Launch Complex 39A. The historic launch site now is operated by SpaceX under a property agreement signed with NASA. The rocket will boost a Dragon resupply spacecraft to the International Space Station. Liftoff is scheduled for 10:01 a.m. EST on Feb. 18. On its 10th commercial resupply services mission to the space station, Dragon will bring up 5,000 pounds of supplies, such as the Stratospheric Aerosol and Gas Experiment (SAGE) III instrument to further study ozone in the atmosphere. Once mounted on the space station, SAGE III will measure the Earth’s sunscreen, or ozone, along with other gases and aerosols, or tiny particles in the atmosphere.

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-14 commercial resupply services mission to the International Space Station. Stephanie Schierholz, of NASA Communications, moderates the news conference. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station at 4:30 p.m. EST, on April 2, 2018. The SpaceX Falcon 9 rocket will lift off on the company's 14th 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-14 commercial resupply services mission to the International Space Station. Jessica Jensen, director, Dragon Mission Management, SpaceX, participates in the news conference. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station at 4:30 p.m. EST, on April 2, 2018. The SpaceX Falcon 9 rocket will lift off on the company's 14th 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-14 commercial resupply services mission to the International Space Station. Pete Hasbrook, associate program scientist, ISS Program Science Office at NASA's Johnson Space Center in Houston; participates in the news conference. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station at 4:30 p.m. EST, on April 2, 2018. The SpaceX Falcon 9 rocket will lift off on the company's 14th 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-14 commercial resupply services mission to the International Space Station. Mike McAleenan, weather officer, 45th Weather Squadron, participates in the news conference. A Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station at 4:30 p.m. EST, on April 2, 2018. The SpaceX Falcon 9 rocket will lift off on the company's 14th Commercial Resupply Services mission to the space station.

In the Press Site auditorium of NASA's Kennedy Space Center in Florida, NASA and industry leaders speak to media at a post-launch news conference following the liftoff of SpaceX CRS-10, a commercial resupply services mission to the International Space Station. From left are: George Diller, NASA Communications; William Spetch, deputy manager of the International Space Station Transportation Office; Jessica Jensen, Dragon mission manager for SpaceX; and Pam Underwood, manager of the Operations Integration Division of the Federal Aviation Administration Office of Commercial Space Transportation. SpaceX CRS-10 lifted off atop a Falcon 9 rocket from Kennedy's Launch Complex 39A at 9:39 a.m. EST.

In the Press Site auditorium of NASA's Kennedy Space Center in Florida, NASA and industry leaders speak to media at a post-launch news conference following the liftoff of SpaceX CRS-10, a commercial resupply services mission to the International Space Station. From left are: George Diller, NASA Communications; William Spetch, deputy manager of the International Space Station Transportation Office; Jessica Jensen, Dragon mission manager for SpaceX; and Pam Underwood, manager of the Operations Integration Division of the Federal Aviation Administration Office of Commercial Space Transportation. SpaceX CRS-10 lifted off atop a Falcon 9 rocket from Kennedy's Launch Complex 39A at 9:39 a.m. EST.

In the Press Site auditorium of NASA's Kennedy Space Center in Florida, NASA and industry leaders speak to media at a post-launch news conference following the liftoff of SpaceX CRS-10, a commercial resupply services mission to the International Space Station. From left are: William Spetch, deputy manager of the International Space Station Transportation Office; Jessica Jensen, Dragon mission manager for SpaceX; and Pam Underwood, manager of the Operations Integration Division of the Federal Aviation Administration Office of Commercial Space Transportation. SpaceX CRS-10 lifted off atop a Falcon 9 rocket from Kennedy's Launch Complex 39A at 9:39 a.m. EST.

In the Press Site auditorium of NASA's Kennedy Space Center in Florida, NASA and industry leaders speak to media at a post-launch news conference following the liftoff of SpaceX CRS-10, a commercial resupply services mission to the International Space Station. From left are: Jessica Jensen, Dragon mission manager for SpaceX; and Pam Underwood, manager of the Operations Integration Division of the Federal Aviation Administration Office of Commercial Space Transportation. SpaceX CRS-10 lifted off atop a Falcon 9 rocket from Kennedy's Launch Complex 39A at 9:39 a.m. EST.

In the Press Site auditorium of NASA's Kennedy Space Center in Florida, NASA and industry leaders speak to media at a post-launch news conference following the liftoff of SpaceX CRS-10, a commercial resupply services mission to the International Space Station. From left are: William Spetch, deputy manager of the International Space Station Transportation Office; Jessica Jensen, Dragon mission manager for SpaceX; and Pam Underwood, manager of the Operations Integration Division of the Federal Aviation Administration Office of Commercial Space Transportation. SpaceX CRS-10 lifted off atop a Falcon 9 rocket from Kennedy's Launch Complex 39A at 9:39 a.m. EST.

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.

In the Kennedy Space Center’s Press Site auditorium, Tori McLendon of NASA Communications, 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.

In the Press Site auditorium of NASA's Kennedy Space Center in Florida, Ven Feng, NASA's manager of the International Space Station Transportation Integration Office, speaks to media at a post-launch news conference following the liftoff of SpaceX CRS-11, a commercial resupply services mission to the International Space Station. SpaceX CRS-11 lifted off atop a Falcon 9 rocket from Kennedy's Launch Complex 39A at 5:07 p.m. EDT.

A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at NASA's Kenney Space Center in Florida, the company's 11th commercial resupply services mission to the International Space Station. Liftoff was at 5:07 p.m. EDT from the historic launch site now operated by SpaceX under a property agreement with NASA. The Dragon spacecraft will deliver 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, designed to study the extraordinary physics of these stars, providing insights into their nature and behavior.

A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at NASA's Kenney Space Center in Florida, the company's 11th commercial resupply services mission to the International Space Station. Liftoff was at 5:07 p.m. EDT from the historic launch site now operated by SpaceX under a property agreement with NASA. The Dragon spacecraft will deliver 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, designed to study the extraordinary physics of these stars, providing insights into their nature and behavior.

Sebastian Mathea of the University of Oxford in England, speaks to members of social media in the Kennedy Space Center’s Press Site auditorium. Mathea is principal investigator for the Crystallization of LRRK2 Under Microgravity Conditions experiment. 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 launch from Kennedy’s Launch Complex 39A on Aug. 14 atop a SpaceX Falcon 9 rocket on the company's 12th Commercial Resupply Services mission to the space station.

A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at NASA's Kenney Space Center in Florida, the company's 11th commercial resupply services mission to the International Space Station. Liftoff was at 5:07 p.m. EDT from the historic launch site now operated by SpaceX under a property agreement with NASA. The Dragon spacecraft will deliver 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, designed to study the extraordinary physics of these stars, providing insights into their nature and behavior.

A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at NASA's Kenney Space Center in Florida, the company's 11th commercial resupply services mission to the International Space Station. Liftoff was at 5:07 p.m. EDT from the historic launch site now operated by SpaceX under a property agreement with NASA. The Dragon spacecraft will deliver 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, designed to study the extraordinary physics of these stars, providing insights into their nature and behavior.

Jeremy Banik, principle investigator the Roll-Out Solar Array, or ROSA, demonstration, speaks to members of social media in the Kennedy Space Center’s Press Site auditorium. The briefing focused on experiments and instruments to be delivered to the International Space Station on SpaceX CRS-11. A Dragon spacecraft is scheduled to be launched from Kennedy’s Launch Complex 39A on June 1 atop a SpaceX Falcon 9 rocket on the company's 11th Commercial Resupply Services mission to the space station.

Richard Grugel, principal investigator, NASA’s Marshall Spaceflight Center, speaks to members of the media during a briefing 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 SpaceX 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 15th Commercial Resupply Services mission to the space station.

In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, thousands of pounds of supplies, equipment and scientific research materials are prepared for loading aboard a Cygnus spacecraft's pressurized cargo module (PCM) for the Orbital ATK CRS-7 mission to the International Space Station. Scheduled to launch on March 19, 2017, the commercial resupply services mission will lift off atop a United Launch Alliance Atlas V rocket from Space launch Complex 41 at Cape Canaveral Air Force Station.

A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at NASA's Kenney Space Center in Florida, the company's 11th commercial resupply services mission to the International Space Station. Liftoff was at 5:07 p.m. EDT from the historic launch site now operated by SpaceX under a property agreement with NASA. The Dragon spacecraft will deliver 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, designed to study the extraordinary physics of these stars, providing insights into their nature and behavior.

In the Press Site auditorium of NASA's Kennedy Space Center in Florida, Dan Hartman, NASA deputy manager of the International Space Station Program, speaks to media at a post-launch news conference following the liftoff of SpaceX CRS-12, a commercial resupply services mission to the International Space Station. SpaceX CRS-12 lifted off atop a Falcon 9 rocket from Kennedy's Launch Complex 39A at 12:31 p.m. EDT.

A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at NASA's Kenney Space Center in Florida, the company's 11th commercial resupply services mission to the International Space Station. Liftoff was at 5:07 p.m. EDT from the historic launch site now operated by SpaceX under a property agreement with NASA. The Dragon spacecraft will deliver 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, designed to study the extraordinary physics of these stars, providing insights into their nature and behavior.

A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at NASA's Kenney Space Center in Florida. This is the company's 10th commercial resupply services mission to the International Space Station. Liftoff was at 9:39 a.m. EST from the historic launch site now operated by SpaceX under a property agreement with NASA. The Dragon spacecraft will deliver about 5,500 pounds of supplies to the space station, including the Stratospheric Aerosol and Gas Experiment (SAGE) III instrument to further study ozone in the atmosphere.

A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at NASA's Kenney Space Center in Florida, the company's 11th commercial resupply services mission to the International Space Station. Liftoff was at 5:07 p.m. EDT from the historic launch site now operated by SpaceX under a property agreement with NASA. The Dragon spacecraft will deliver 6,000 pounds of supplies, such as the Neutron star Interior Composition Explorer, or NICER, designed to study the extraordinary physics of these stars, providing insights into their nature and behavior.

Bret Greenstein, IBM Global Vice President of Watson and IOT Offerings, 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 SpaceX 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 15th Commercial Resupply Services mission to the space station.