NASA said Tuesday its next crew rotation to the International Space Station could be delayed after SpaceX announced it was grounding flights of its Falcon 9 rocket to investigate an unspecified issue.

Four astronauts with SpaceX Crew-11 are set to undock from the International Space Station to make their return to Earth. This planned departure comes after NASA announced that it postponed a spacewalk due to a crew member's medical situation.

In an unprecedented move, NASA executed the first-ever emergency medical evacuation from the International Space Station, rushing four astronauts back

As two space station builders approach the final stretch before their big launches, they're flying a new private mission to the International Space Station.

For the 1st time in the history of the International Space Station, an astronaut experienced a health issue that required NASA to end a mission early.

The International Space Station is visible from Nevada at certain times. Here’s when to look, where to go and how to track it.