Scientists discovered a distant jellyfish galaxy with star-forming "tails" stretching back 8.5 billion years.

Drawing together leading experts from across the field, an international collaboration of cosmologists has created a unified approach for measuring the value of the Hubble constant. Published in ...

If you’ve ever tried to picture how massive some of fiction’s most famous structures really are, this new video from MetaBall ...

All the “normal” matter, like the stars, gas, dust, and people, is called baryonic matter, and it’s basically the tiny visible fraction of a universe that’s mostly invisible and still not fully ...

They show up as a mathematical solution in general relativity, basically as a time-reversed version of a black hole. Some ...