NASA has visualized the cataclysm, which is thought to have caused a mysterious eruption of gamma rays captured by telescopes ...

The European Space Agency said that the black hole inside the spiral galaxy NGC 3783 has the mass of 30 million suns.

A strange X-ray signal spotted decades ago may be the result of a star that got attacked by two black holes, one after the ...

X-ray space telescopes caught a supermassive blackhole flinging matter into space at a fifth of the speed of light ...

A never-before-seen blast from a supermassive black hole was spotted by two sophisticated X-ray space telescopes. This giant ...

Astronomers have spotted the longest gamma-ray burst ever seen, a cosmic explosion that lasted seven hours — and they ...

A team of astronomers including George Washington University physics Ph.D. student Eliza Neights recorded an extraordinary ...

Scientists have confirmed that colossal collisions between galaxies trigger titanic eruptions in the centers of those ...

NASA has created an animation to show what likely happened on July 2nd after a black hole appeared to shred a star. For ...

The cosmos has served up a gift for a group of scientists who have been searching for one of the most elusive phenomena in ...

How confusing inevitability with reality built decades of paradox. What if general relativity never actually tells us that ...

Astronomers capture the twinkle of a distant quasar, RX J1131, and reveal the secret size of a black hole's fiery corona.