HOUSTON — NASA astronaut Mike Massimino is using Twitter to provide a unique, behind the scenes peek at the last weeks of his training for the fifth and final shuttle servicing mission to NASA’s ...

NASA astronaut Mark Polansky, commander of the next space shuttle mission to the International Space Station in June, is sharing updates about his training and flight on Twitter. He invites followers ...

After making groundbreaking discoveries about the mysterious interior of the red planet, the InSight lander's mission has officially ended. The stationary lander spent nearly 1,500 days on Mars.

In an unfortunate turn of events, ex-NASA astronaut and current podcaster Clayton Anderson has been caught favoriting a spate of transphobic tweets — and right around Trans Day of Visibility, no less.