Ever since humans first gazed up at the night sky, the Universe has filled us with awe and wonder. Lately, however, it's also ...

Just 3,000 light-years from Earth is a black hole visible to the naked eye. Thankfully, we are a safe distance from this ...

A sudden X-ray flare from a supermassive black hole in galaxy NGC 3783 sparks ultra-fast winds, offering new clues about ...

A never-before-seen blast from a supermassive black hole was spotted by two sophisticated X-ray space telescopes. This giant ...

Astronomers capture the twinkle of a distant quasar, RX J1131, and reveal the secret size of a black hole's fiery corona.

X-ray space telescopes caught a supermassive blackhole flinging matter into space at a fifth of the speed of light ...

Astronomers have observed a star wobbling in its orbit around a ravenous supermassive black hole that is ripping it apart and ...

The 11th day of the 18th annual Space Telescope Advent Calendar features a new view of the heart of a nearby spiral galaxy.

The scientists who precisely measure the position of Earth are in a bit of trouble. Their measurements are essential for the satellites we use for navigation, communication and Earth observation every ...

Researchers have created a fully relativistic model showing that gravitational waves might carry hidden clues about dark ...

How confusing inevitability with reality built decades of paradox. What if general relativity never actually tells us that ...

NASA has visualized the cataclysm, which is thought to have caused a mysterious eruption of gamma rays captured by telescopes ...