A pair of quasars that existed when the universe was only 3 billion years old has been spotted by the Hubble Space Telescope.

The Universe is continually expanding, and scientists measure its expansion rate, the Hubble Constant, using two main methods: electromagnetic methods (using light from stars, galaxies, or supernovae) ...

This pretzel-shaped collection of galaxies is our Universe. And it's about to collide with another universe. It might be fascinating to watch, but we should probably be worried about what's going to ...

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 ...

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 ...

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 ...

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 ...