On Friday, September 15, a crew of three astronauts will be launching on a Russian Soyuz rocket headed for the International Space Station. Here's how to watch.
The sun's corona, or its outer atmosphere, is hundreds of times hotter than its surface, and it's still not clear exactly what that should be the case.
ISS inhabitant Frank Rubio has set a record for the longest time in orbit by a NASA astronaut, but that wasn't the plan when he arrived there nearly a year ago.
NASA’s lunar orbiter has photographed what’s believed to be the crash site of Russia’s failed Luna-25 mission some 250 miles from its intended landing point.