Because it doesn't interreact with light or electromagnetism, dark matter exists to us only through its influence on visible ...

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.

A vast filament of gas stretching across the cosmos may help solve the mystery of the Universe’s missing matter. Astronomers have identified a massive filament of hot gas connecting four galaxy ...

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

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 ...

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

Everything in space—from Earth and the sun to black holes—accounts for just 15% of all matter in the universe. The rest of ...

Is the Hubble constant—a key part of how we measure the expansion of our universe—in a crisis? Some cosmologists say yes.

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