Our galaxy and its nearest large companion, Andromeda, may be headed for a collision on a cosmic scale. What happens then?

A pair of quasars that existed when the universe was only 3 billion years old has been spotted by the Hubble Space Telescope. The quasars were powered by a pair of supermassive black holes on a ...

What's the truth behind this unusually tranquil city of galaxies?

In what could be a considered a celestial version of "Pac-Man," scientists have detected black holes gobbling up neutron stars — marking the observation of collisions between the two most extreme ...

Two distant black holes will smash into each other, releasing more energy than 100 quintillion Earths full of TNT, and new research has just moved up the timeline for the explosion. Eric Mack has been ...

A collision of two massive clusters of galaxies when the Universe was half its current age should not have happened according to the standard theory of cosmology, says a new study by an international ...

The pseudo-color images of JWST’s Quintet at redshift 6.71. a) The pseudocolor image created from NIRCam F115W (blue), F150W (green), and F200W (red) images. The five emission line galaxies in JWST’s ...

Composite color image of the interacting galaxy cluster El Gordo, showing X-ray light from NASA's Chandra X-ray Observatory in blue, optical data from the European Southern Observatory's Very Large ...