X-ray observations of the cluster revealed that it is made up of two galaxy clusters merging along our line of sight.

A technique called echo mapping suggests supermassive black holes, like that at the heart of the Milky Way, are surrounded by ...

This NASA Hubble Space Telescope image features a galaxy cluster called CL0016+1609, or MACS J0018.5+1626, that is very ...

The universe is more than a smattering of distant stars—it’s also chock-full of other worlds. But if the universe is so crowded, where is the alien life? While there are many theories addressing this ...

What is dark matter? Even for astrophysicists, it's a question that remains unanswered. These invisible particles make up most of the matter in the universe and about a quarter of the universe as a ...

The universe is far from homogenous. Rather, stars, and the galaxies that contain them, clump together in some places, brought together by their shared gravitational attraction. Astronomers have ...

There's no single definition of seizure clusters, also called cluster seizures. In general, it's a group of seizures that happen more often than you're used to within a certain span of time. Some ...

Particles with diameters of a few nanometres or less often have properties that change with the addition of a single atom. Such particles are known as clusters and are of considerable research ...