A giant black hole in NGC 4486B reveals a recent cosmic merger that has astonished the astronomical community.

Learn how shifting jets in galaxy Mrk 501 exposed a pair of orbiting supermassive black holes nearing collision.

Despite hurtling through space at incredible speeds, we don't feel the Earth's motion because it's constant and shared. Like ...

The Milky Way is a spiral galaxy containing 100-400 billion stars. Planet Earth sits along one of the galaxy’s spiral arms. Though the Milky Way is generally always visible from Earth, certain times ...