When astronomers first cataloged some of the closest orbiting rocky exoplanets, they wrote them off as bare, airless cinders, ...

A comet from another star system is sweeping through our cosmic backyard and, for the first time, astronomers have picked up ...

Bruno, who led ULA for nearly 12 years and oversaw the development of that company's new Vulcan rocket, has joined Blue ...

This has been quite the wild year in human evolution stories. Our relatives, living and extinct, got a lot of attention—from ...