In the turbulent heart of the Milky Way, near the supermassive black hole Sagittarius A*, astronomers have uncovered a ...

Scientists using two enormous telescopes — one on Earth and the other in space — have detected oxygen in the most ancient known galaxy, a star-scape beaming light just 300 million years after the Big ...

An accidental discovery by a team of astronomers has upended existing theories about how galaxies formed in the early ...

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.