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 ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of ...

We obviously can’t put the universe on a giant set of scales, but scientists have found astonishingly clever ways to […] ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

ORCs are vast, faint rings of radio energy that surround galaxies and can be detected only in radio wavelengths of the ...

According to data from the Hubble and James Webb Space Telescopes, the origins of the free-flying photons in the early cosmic ...

The early universe was already warm before reionization, revealing that the first stars did not flicker on in an icy cosmos.

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

It will be a view unlike any other — completely invisible, exceptionally quiet and utterly transformative. Deep in the first moments of the Big Bang, the entire cosmos shook and rumbled. Those quakes ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and that black holes appeared later. But some have proposed that it went the other ...