Deciphering the universe’s secrets is partly done through observation, but just as important are solid models of the forces ...

Earth—our tiny blue dot in the galaxy—is approximately 26,000 light years away from a fascinating and active region of the ...

New 3D-printable models of Chandra X-ray Observatory images will allow you to hold a star in your hands and touch a supernova remnant.

In simplest terms, the rate at which the universe expands on paper doesn’t match actual astronomical observations. That speed—called the Hubble Constant—is measured in units of kilometers per second ...

"This shocking result means that we now need to revisit the very foundations of everything we know about cosmology," said the ...

Neutron stars are some of the weirdest cosmic objects, and the greatest mysteries lie deep in their hearts.

The "afterglow" of the universe is an important piece of evidence for the Big Bang. This background radiation also provides ...

"It's pretty incredible to think that some of the heavy elements all around us, like the precious metals in our phones and ...

Most people have never heard of vacuum decay, but if it happened it would be the biggest natural disaster in the universe. If ...

Ralf Klessen investigates the physical processes that governed the formation of the first generation of stars in the early ...

These newer models stay stable and match up with what we see. The idea gains strength from an interesting observation: everything in the universe spins. Planets rotate. Stars rotate. Black holes ...

Shocking’ results from a major astronomical study have raised doubts about the standard model of cosmology, forcing ...