The Milky Way ripples like a vast cosmic wave. Gaia’s precise measurements reveal a colossal motion sweeping through the galaxy’s disc, an echo of something mysterious in our galaxy’s ancient past.

Astronomers see no stars ejected from the center of our Milky Way galaxy, giving them important information about the Sgr A* black hole.

HD 140283, better known as the Methuselah star, is around 200 light-years from Earth, in the constellation of Libra. It is ...

For decades, astronomers have looked to the outer reaches of the cosmos for answers to our most fundamental questions: Where ...

The most energetic events in the universe are gamma ray bursts, beams of radiation so intense they could wipe out all life on ...