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

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

Black holes are remarkable astronomical objects with gravity so strong that nothing, not even light, can escape them. The ...

Until now, that is. Supermassive black holes, with masses millions, or sometimes billions, of times that of the sun, are ...

"Very massive stars are like the 'rock stars' of the universe — they are powerful, and they live fast and die young." ...

Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than ...