"Theories involving substantial formation of stars prior to or together with the black hole formation and growth are very ...

Scientists have observed a new type of black hole that is too heavy to have been born from a star but still too slim to … The ...

Astronomers studying a distant galaxy cluster stumbled upon ancient radio signals that might hold clues to the formation of ...

What happens when two rare ring galaxies collide? They form an infinity symbol—or the face of a cosmic owl, depending on how ...

Hubble spotted a rare off-center black hole shredding a star, revealing the first optical discovery of a wandering ...

Hubble Space Telescope snapped an image of UGC 11397, a spiral galaxy situated in the constellation Lyra, about 250 million ...

Gravitational waves stretch and squeeze the fabric of space and time itself. When space/time is squeezed, pulsar pulses ...

The scientists who precisely measure the position of Earth are in a bit of trouble. Their measurements are essential for the ...

At cosmological scales, Albert Einstein’s theory of general relativity has given scientists an immensely accurate blueprint ...

Particles orbiting a black hole could collide at colossal energies, generating collision products that may offer valuable insights for particle physics ...

Andromeda never looked as good as it does in a new image from the Chandra X-ray observatory and a range of powerful ...

Scientists believe the Milky Way contains up to 400 billion stars and at least as many planets. The largest galaxy known, IC 1101, has more than 100 trillion stars. Step outside on a clear night and ...