Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station In this long exposure photo, photographers watch a SpaceX Falcon 9 rocket with the Crew Dragon space capsule lifts off from pad 39A at the Kennedy Space Center in Cape Canaveral, Fla., Friday, April 23, 2021. (AP Photo/Brynn Anderson)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station In this image made from NASA video, the SpaceX Crew Dragon spacecraft is seen before its liftoff for the Crew-2 mission carrying NASA astronauts Shane Kimbrough, Megan McArthur, ESA (European Space Agency) astronaut Thomas Pesquet, and Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide from Launch Complex 39A, Friday, April 23, 2021, at the Kennedy Space Center in Cape Canaveral, Fla. (NASA via AP)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station In this image made from NASA video, astronauts are seen in the cockpit of the SpaceX Crew Dragon spacecraft after lift off for the Crew-2 mission from Launch Complex 39A, Friday, April 23, 2021, at the Kennedy Space Center in Cape Canaveral, Fla. (NASA via AP)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station In this image made from NASA video, the SpaceX Crew Dragon spacecraft lifts off for the Crew-2 mission carrying NASA astronauts Shane Kimbrough, Megan McArthur, ESA (European Space Agency) astronaut Thomas Pesquet, and Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide from Launch Complex 39A, Friday, April 23, 2021, at the Kennedy Space Center in Cape Canaveral, Fla. (NASA via AP)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station The Crew Dragon space capsule astronauts, from front left, European Space Agency astronaut Thomas Pesquet, NASA astronaut Megan McArthur, NASA astronaut Shane Kimbrough and Japan Aerospace Exploration Agency astronaut Akihiko Hoshide leave the Operation and Checkout Building on their way to board the capsule for a mission to the International Space Station at the Kennedy Space Center in Cape Canaveral, Fla., Friday, April 23, 2021. (AP Photo/John Raoux)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station A SpaceX Falcon 9 rocket with the Crew Dragon space capsule lifts off from pad 39A at the Kennedy Space Center in Cape Canaveral, Fla., Friday, April 23, 2021. (AP Photo/Brynn Anderson)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station In this image made from NASA video, NASA astronauts Shane Kimbrough, Megan McArthur, ESA (European Space Agency) astronaut Thomas Pesquet, and Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide are seen in the cockpit of the SpaceX Crew Dragon spacecraft after lift off for the Crew-2 mission from Launch Complex 39A, Friday, April 23, 2021, at the Kennedy Space Center in Cape Canaveral, Fla. (NASA via AP)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station A SpaceX Falcon 9 rocket with the Crew Dragon space capsule leaves a trail of smoke as it lifts off from pad 39A at the Kennedy Space Center in Cape Canaveral, Fla., Friday, April 23, 2021. (AP Photo/John Raoux)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station NASA astronauts Shane Kimbrough, left, and Megan McArthur, right, wave farewell, as they prepare to depart the Neil A. Armstrong Operations and Checkout Building for Launch Complex 39A to board the SpaceX Crew Dragon spacecraft for the Crew-2 mission launch with crew mates ESA (European Space Agency) astronaut Thomas Pesquet, and Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide, Friday, April 23, 2021, at NASA's Kennedy Space Center in Florida. (Aubrey Gemignani/NASA via AP)
Photos: SpaceX launches 4 astronauts on reused capsule, rocket to International Space Station A SpaceX Falcon 9 rocket with the Crew Dragon space capsule lifts off from pad 39A at the Kennedy Space Center in Cape Canaveral, Fla., Friday, April 23, 2021. (AP Photo/Brynn Anderson)