First discovered in the 1990s, dark energy has come to feel like a familiar face of the cosmos. Astronomers first imagined ...

GS-z13-1, observed shortly after the Big Bang, emits light that shouldn't be visible. This discovery, made possible by the ...

"We report the discovery of one of the most distant galaxies known to date," astrophysicist Joris Witstok told Newsweek.

High-energy particle accelerators, such as CERN’s Proton Synchrotron and Brookhaven’s Alternating Gradient Synchrotron, were ...

Primordial black holes are the earliest black holes thought to exist, and they vanished almost as fast as they came into ...