A story of survival is unfolding at the outer reaches of our galaxy, and NASA's Hubble Space Telescope is witnessing the saga ...

A 3D map of our cosmic neighborhood has revealed hot and cold regions as well as an "escape tunnel" from our local bubble.

An international team of astronomers has identified three ultra-massive galaxies—each nearly as massive as the Milky ...

Eventually, every stellar civilization will have to migrate to a different star. The habitable zone around all stars changes ...