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

When two black holes slam together, they do not simply vanish into darkness, they ring like struck bells and briefly light up ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

This cosmic explosion rippled through space-time. Finding more like it could solve mysteries such as the reason behind the universe's expansion. Jackson Ryan was CNET's science editor, and a multiple ...

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 ...

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 ...