Jonny Kim earned his trident and stethoscope before launching with Sergey Ryzhikov and Alexey Zubritsky on Tuesday (April 8).

NASA astronaut Jonny Kim and two Russian crewmates have arrived at the International Space Station on board a Russian ...

Editor's note:Click here to watch the Starliner astronauts return to Earth. The astronauts who flew aboard the infamous Boeing Starliner for its maiden crewed voyage are on their way home.

The main difference between life on the International Space Station (ISS) and life here on terra firma is microgravity, which forces you to float around rather than walk. To prepare newbie ...

NASA and SpaceX made another attempt on Friday to send a crew up to the International Space Station (ISS) and begin the return of a pair of astronauts.

A routine crew rotation at the International Space Station has taken on unusual significance: It paves the way for a pair of astronauts stranded for more than nine months to finally come home.

Not long to go now: After more than nine months on the International Space Station, two astronauts are a step closer to returning home following the launch of a crew swap mission on Friday.