Scientists using observations from NASA's Neil Gehrels Swift Observatory have discovered, for the first time, the signal from ...

Astronomers have identified three ultra-massive galaxies -- nearly as massive as the Milky Way -- already in place within the first billion years after the Big Bang. This surprising discovery was made ...

Scientists using observations from NASA's Neil Gehrels Swift Observatory have discovered, for the first time, the signal from a pair of monster black holes disrupting a cloud of gas in the center of a ...

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile have discovered "signs of a ‘hot spot’ orbiting Sagittarius A*," according to the European Southern Observatory (ESO) ...

Some stars may transform into black holes without exploding into supernovae. Now, astronomers have finally spotted it as it ...

Massive stars about eight times more massive than the sun explode as supernovae at the end of their lives. The explosions, ...

Astronomers have witnessed a rare cosmic event, where a massive star in the Andromeda galaxy (M31) has transformed directly into a black hole, without the usual supernova explosion. The phenomenon ...

Stars have a life and death-cycle. Those that are about eight times more massive than the Sun explode as supernovae at the ...

The outward force from its fusion can no longer counteract the star's powerful gravity, and the star collapses in on itself.

The spiral arms of nearby galaxy Messier 81 is captured by NASA's Spitzer Space Telescope. This galaxy is easily visible ...

This is not carelessness, but the possible discovery of a rare stellar event in the Andromeda galaxy. A red supergiant star ...