It's official. Not a single person under the age of 25 has lived a day where there has not been a human orbiting Earth − and that is likely to never change. On Nov. 2, 2000, Expedition 1 arrived at ...

Add Yahoo as a preferred source to see more of our stories on Google. From our position on the ground, it can be easy to forget that we’re a spacefaring species. But if you look up to the night sky at ...

The ISS has “come into its own as a very sophisticated scientific laboratory,” says retired NASA astronaut Scott Kelly, who ...

Human spaceflight is on the cusp of an intriguing new dawn. For 25 years, astronauts have lived and worked onboard the International Space Station (ISS), starting with the arrival of its first ...