A supercluster is usually composed of hundreds or even thousands of clusters of galaxies, and these clusters are ...

For this reason black holes are invisible to the eye, as lightless as the empty, dark space surrounding them. Scientists know they exist not because they can see an actual hole, b ...

Primordial supernovae got the ball rolling a quick hundred million years or so after the start of the universe.

The rate of stars going supernova near Earth appears to match two mass extinctions -- 372 million years ago and 445 million ...

The infinity of the universe hides facts such as the one that has been uncovered in recent days. An object 13 times the size of the planet Jupiter is wandering uncontrollably throu ...