The Crew Dragon capsule sits atop a SpaceX Falcon 9 rocket as it is readied for launch on Pad 39A for a mission to the International Space Station at Kennedy Space Center in Cape Canaveral, Florida, US, April 22, 2021. [Reuters]
NASA and commercial rocket company SpaceX were due to launch a new four-astronaut team to the International Space Station early on Friday in what would be the first crew propelled into orbit by a rocket booster recycled from a previous spaceflight.