Astronomers have tracked a powerful blast of radiation back to its source, finding a neutron star collision within colliding galaxies.

The universe is overrun with dark matter, outweighing the ordinary stuff that stars and planets are made of five-to-one. But ...

NASA said CDG-2 “may be among the most heavily dark matter-dominated galaxies ever discovered” ...

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.

A major recent development has painted a clearer picture of the universe as NASA has began checking Hubble's images after ...

Astronomers have long sorted galaxies into types based on their visible structure. Spiral galaxies, like our Milky Way, have a flat disk, winding spiral arms and ongoing star formation. Ellipticals ...

The discovery of CDG-2 began when a team of astronomers investigated tight groupings of stars called globular clusters, which ...

The Hubble Space Telescope has captured imagery of spiral galaxy UGC 2890. The "galaxy lies around 30 million light-years ...

Behind the dusty clouds of the Cigar Galaxy lies a dazzling powerhouse of star formation, where stars are being born ten times faster than in the Milky Way. Astronomers using the Hubble Space ...

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

A recently detected flash of energy appears to have emanated from the wreckage of colliding galaxies, according to an international team of astronomers led by Penn State scientists. The burst, known ...