Einstein believed that black holes didn't really exist. But they do: that much we know. We don't know much else about them.

When the galaxy set over the horizon for one telescope ... of radio waves from a ring of light encircling the shadow of a black hole more than 300 quintillion miles away. The weather was perfect ...

Matein Khalid “We went eyeball to eyeball and the other guy blinked” – JFK said about Nikita Peasantovich Shoe Bangarov after Stalin's h ...

And so I was left where I’d started: with the black hole at the center of this exploding galaxy, its destructive ... He lived in the shadow of a failed father. “My sons never had to deal ...

The quasi-periodic eruptions of X-rays from a black hole 300 million light-years away are unlike any researchers have ever ...

A massive black hole at the heart of a galaxy in the Virgo constellation is waking up, shooting out intense X-ray flares at ...

The black hole at the center of a galaxy named SDSS1335+0728, about 300 million light-years away, first showed signs of stirring when, in 2019, the galaxy started shining brightly. But since 2024, ...

A recent astronomical discovery is revolutionizing our understanding of spiral galaxies. A giant spiral galaxy, located ...

A mysterious black hole in a distant galaxy just woke up after decades of silence—and it’s putting on a cosmic light show! ESA’s XMM-Newton and other X-ray telescopes are capturing massive bursts of ...

While solitary black holes should be common, they are hard to find. The one in Sagittarius revealed itself when it passed in front of a dim background star, magnifying the star’s light and slowly ...

Hubble’s 35‑year celebration brings a vibrant reimagining of the Sombrero Galaxy, revealing hidden dust lanes and far‑flung stars. This iconic “Mexican hat” quietly forms almost no new stars while ...