The giant elliptical galaxy NGC 1052 (at left) dominates the cluster it's a part of, though many other large galaxies are present, such as the giant spiral NGC 1042. Nearby to these galaxies are small ...

A team of scientists have demonstrated how to “weigh” galaxy clusters using light from the earliest moments of the universe—a new method that could help shed light on dark matter, dark energy and ...

Astronomers have uncovered a colossal, searing-hot filament of gas linking four galaxy clusters in the Shapley Supercluster a discovery that could finally solve the mystery of the Universe s missing ...

The intense gravity from extra-bright galaxies with huge black holes at their cores is bending light to create cosmic magnifying glasses, astronomers say. Using the Hubble Space Telescope, researchers ...

Before I do anything else, I simply have to present this insanely cool Hubble image of the galaxy cluster MACS J1206, which lies at the mind-numbing distance of 4.5 billion light years from Earth: ...

Dark matter is considered the glue that holds galaxies together – but a few years ago, a team of astronomers claimed to have found a galaxy that didn’t have any. Other scientists later argued it was a ...