Our Milky Way could have many more satellite galaxies than we've detected so far. They're just too faint to be seen.

The event is the most massive black hole merger ever recorded by gravitational wave detectors and has forced physicists to ...

The newly discovered space rock may be older than our entire solar system, and you may get the chance to see it ...

Scientists have detected the collision of two massive black holes merging beyond the Milky Way. The two black holes, each ...

Scientists predict up to 100 invisible galaxies may orbit the Milky Way, hiding just beyond our current detection limits.

A surprising discovery at the heart of the Milky Way is forcing scientists to rethink how massive structures called Fermi ...