NASA astronaut returns to Earth after 371 days in space, a US record for longest continuous spaceflight
NASA capsule brings sample from asteroid to Earth for the first time in American history: 'We have touchdown!'
Soyuz docks at International Space Station with two Russians, one American
NASA appoints new director of UFO research in push to examine 'one of our planet’s greatest mysteries'
Red Planet breakthrough: NASA generates enough oxygen on Mars to keep small dog alive for 10 hours
Hawaii's Kilauea volcano erupting for third time this year
Mysterious 'golden orb' discovered by researchers on Alaskan seafloor
5 asteroids to pass Earth this week, including one as big as a house: NASA
