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 newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

The Hubble Space Telescope has found evidence of a "wandering" black hole about 5000 light years away in the Milky Way galaxy. Astronomers estimate that there could be 100 million black holes ...

Astronomers have discovered a giant, 500-light-year-wide cavity between two star-forming regions in the constellations ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...