What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter.

We know how the universe began. An event we call the Big Bang started it all about 13.8 billion years ago. How the universe ends, though, is an open question. The path forward depends on the ...

On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

To answer Robertson: The Higgs field doesn’t appear to have more valleys to explore, according to our current understanding.