Live coverage: SpaceX cargo capsule returns to Earth

Seven astronauts and cosmonauts are gearing up for launches April 9 and April 22 to the International Space Station, replacing seven outgoing crew members set to land in Kazakhstan and off the coast of Florida on April 17 and April 28.

The launch of a Russian Progress cargo ship aboard a Soyuz rocket was aborted in the final minute of the countdown Sunday, forcing a delay of at least two days in the start of a resupply and refueling mission to the International Space Station.

In this time-lapse video, the Falcon 9 rocket with the Crew Dragon atop rolls to launch pad 39A at the Kennedy Space Center for the first time on January 3. The rocket was then lifted vertical for a series of fit checks and tests.