The black hole, spotted 5 billion light-years away in the Cosmic Horseshoe, could be the most massive ever found.

Our Milky Way is one of more than 100 galaxies bound together by gravity.

And its size stretches almost 250,000 light-years across – which is 2.5 times larger than our own Milky Way galaxy.

The supermassive black hole named Sagittarius A* lies in the middle of the Milky Way. Observations of S2 and other stars also helped astronomers calculate the extraordinary size and mass of ...

Because the Milky Way is disk-shaped, astronomers had to look through clouds of dust and debris to peer at the dense heart of our galaxy where the supermassive black hole was thought to lie.

And its size stretches almost 250,000 light-years across – which is 2.5 times larger than our own Milky Way galaxy.

M11 is best viewed in the hours between sunset and midnight in August, when the cluster can be found roughly 40 degrees above ...

CINCINNATI (WKRC) - Scientists reportedly spotted a comet the size of Manhattan flying through the Milky Way galaxy, marking the third time an object from outside the galaxy has been spotted in ...

From where Sagittarius A* sits, 26,000 light-years away at the center of the Milky Way, only 1 in 10 billion photons of visible light can reach Earth — most are absorbed by gas in the way.

Scientists with the IceCube Neutrino Observatory have unveiled a striking new image of our Milky Way galaxy as seen by ghost-like messenger particles called neutrinos. This new analysis ...