A recent loss of a longtime friend can provoke a lot of grief. It is how we deal with that grief, and what it says about our ...

Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

Blue Origin launched six people to suborbital space today (Jan. 22). It was the 17th human spaceflight for the company, which was founded by Amazon's Jeff Bezos.

'We can't make it easy,' says Stowell.