Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

Leo P, a small galaxy and a distant neighbor of the Milky Way, is lighting the way for astronomers to better understand star ...

Astronomers detected light from galaxy GHZ2, 13 billion light-years away, revealing insights into early universe formation.

Found less than a billion years after the Big Bang, these massive objects are upending astronomers’ timeline for how early ...

Looking at a distant galaxy means looking back in time.

The Andromeda Galaxy, our nearest galactic neighbor, is a majestic spiral galaxy like the Milky Way. Let’s uncover some ...

Surrounded by glowing discs of swirling gas, quasars emit immense light that can be seen across vast cosmic distances.