The local universe may be expanding more slowly than previously thought, a discovery that could relieve a pesky discrepancy ...

The universe is overrun with dark matter, outweighing the ordinary stuff that stars and planets are made of five-to-one. But some corners of the cosmos are more dominated by the i ...

A galaxy made almost entirely of dark matter, an elusive form of matter that doesn’t interact with light, was spotted by Hubble 250 million light-years from Earth.

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Two new studies have measured the expansion of the universe in our immediate cosmic neighborhood using a novel method that ...

Astronomers have detected a ghostly galaxy that is almost completely made of dark matter. The faint object was revealed by just four globular star clusters hiding in the Perseus cluster.

The Small Magellanic Cloud (SMC) is one of the Milky Way's closest galactic neighbors—a small, gas-rich galaxy visible to the ...

The Triangulum Galaxy, the third-largest member of the Local Group of galaxies, is shining with star formation in a new image from the Hubble Space Telescope. When you purchase through links on our ...

Astronomers have spotted a galaxy so faint, it’s almost invisible — a discovery that could help illuminate one of the most elusive substances in the universe. The researchers found Candidate Dark ...