The four newcomers will spend the next few days learning the station’s ins and outs from Butch Wilmore and Suni Williams. Then it will be time for those two to end their nine-month stay and head home.

America is eagerly awaiting the return of two astronauts who have been stuck on the ISS since last June. Here's who they are.

NASA and Elon Musk-owned SpaceX are preparing for the return of the Crew-9 mission from the International Space Station (ISS), targeting an earlier-than-expected evening touchdown on Tuesday, March 18,