A new study of super-fast-moving stars suggests that they were accelerated by a monster black hole that's been lurking unseen ...

The Milky Way galaxy is packed with hydrogen atoms, and these atoms are constantly emitting 21 cm radiation. The best part is that this radiation can travel long distances through the interstellar ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers using ...