This gas needs an enormous amount of energy to shine — more than normal stars can supply. The discovery, based on data from ...

The latest discovery marks the first-ever "compelling clue" that a black hole may be present in the enigmatic galaxy, ...

The black hole at the heart of galaxy SDSS1335+0728, located 300 million light-years away, was quiet for decades as it consumed little matter and was in a dormant state. But recently it suddenly lit ...

Stars are the architects of nearly all the chemical elements in the universe, including ones crucial to life as we know it, such as carbon and oxygen. Yet, despite decades of research, aspects of star ...

A team of US astronomers led by Kailash Sahu said they have finally discovered the first isolated stellar-mass black hole ...

A newly released image from the Hubble Space Telescope shows the charming Sombrero Galaxy, named for its resemblance to the ...

Point sources such as the black hole at the center of the galaxy or cosmic ray sources like supernovas (exploding stars) cannot easily explain this. But a smoothly distributed dark matter halo can.

From spellbinding images to groundbreaking scientific discoveries, we look back on some of Hubble's most exciting milestones.