Four astronauts are expected to join the International Space Station (ISS) this weekend. SpaceX is preparing to launch a Falcon 9 rocket from the east coast of the United States from the Kennedy Space Center in Florida.
The crew is made up of three men and one woman: Russian Alexandre Grebionkine and Americans Matthew Dominick, Jeanette Epps and pilot Michael Barratt. With the exception of the latter, who has already flown aboard a Soyuz and the Discovery shuttle, all will be making their first stay in space.