Dark matter makes up 85% of the universe, but researchers, including Vera Rubin herself, historically have had a hard time ...

Scientists think they found evidence of weird ancient stars called "dark stars" that are powered by dark matter instead of ...

University of Arizona astrophysicist Erika Hamden takes readers on a romp through a "Weird Universe" in her debut popular ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

New observations support the idea that hot, diffuse threads of gas called cosmic filaments connect clusters of galaxies ...

A vast filament of gas stretching across the cosmos may help solve the mystery of the Universe’s missing matter. Astronomers ...

The camera, now bolted to the end of a giant telescope at the Rubin Observatory, is expected to shoot photos of 20 billion ...

Scientists may have found a new way to detect some of the universe's most mysterious objects, primordial black holes (PBHs), ...

Black holes are expected to be the last giant objects left in the universe, but even they will slowly shrink and disappear ...

A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have instead ...