Black holes might be invisible, but the superheated matter piling up around them shines brightly in the gamma ray spectrum.…
Although black holes can't be seen directly, they're relatively easy to find. Matter spiraling into a black hole becomes superheated,…
The supermassive black holes thought to be lurking at the heart of most galaxies could create such a hostile environment…
Look into the sky with X-ray instruments, and you'll see a background radiation in all directions. Astronomers think these X-rays…
Some of the brightest objects in the Universe are quasars. A mystery for decades, most astronomers now believe quasars are…
Even though the gravity from black holes is so strong that light can't even escape, we can see the radiation…
The supermassive black holes that lurk at the heart of most galaxies have enormous appetites. They've already consumed millions of…
Black holes... you know. Cosmic singularities that can contain the mass of billions of stars like our Sun. Where the…
Astronomers have been puzzling over a mystery for a few years now, and they think they might have an answer.…
An international team of astronomers have analyzed a recent short gamma-ray burst, and they think it's the last scream of…