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

Most small galaxies that stopped making new stars in the early universe never resumed operations. Something caused their ...

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

In the modern universe, supermassive black holes at the center of galaxies and their host galaxies grow together. But this ...

Astronomers have struggled with finding ultra-faint dwarf galaxies far enough from the Milky Way's influence, making these ...

"This is how you solve the universe-breaking problem." ...

Galaxies like the Milky Way grow by merging with smaller galaxies over billions of years, unlike dwarf galaxies, which have ...

Yale researchers among those who discovered three “ultra-massive” galaxies, which were formed shortly after the Big Bang and ...

A rare group of aligned, star-birthing dwarf galaxies resemble a cosmic string of pearls. Astronomers have discovered a rare ...

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

This is called the “heat death” of the Universe, but you can think of it instead as the death of heat. There will be no more ...