Scientists have found evidence for a cosmic collision in the Perseus cluster, a group of thousands of galaxies not far from ...

Mysterious dark matter makes up 85 percent of matter in the universe, and of the remaining 15 percent, scientists couldn’t ...

Amateur astrophotographer Dr. Michele Hernandez Baylisshas captured incredible views of the Croc's Eye and Whirlpool galaxies ...

A fog of long-wavelength infrared light could be produced by dusty, star-forming galaxies that have remained hidden — until now, that is.

Like how the Earth keeps the Moon bound on a gravitational tether, our nearest galactic neighbor, the Andromeda galaxy (M31), is surrounded by a bunch of tiny satellite galaxies. In other words ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago. In ...

Exotic properties suggested by recent DESI collaboration data are more likely to apply to dark energy than dark matter, ...