Black Holes
Black Hole Stops Star Formation in Elliptical Galaxy
New images from NASA's Chandra X-Ray Observatory show the environment around the supermassive black hole at the heart of M87,…
Finding All the Black Holes
Black holes might be invisible, but the superheated matter piling up around them shines brightly in the gamma ray spectrum.…
Fine Tuning the Search for Black Holes
Although black holes can't be seen directly, they're relatively easy to find. Matter spiraling into a black hole becomes superheated,…
Supermassive Black Holes Prevent Star Formation
The supermassive black holes thought to be lurking at the heart of most galaxies could create such a hostile environment…
The Search for Hidden Black Holes
Look into the sky with X-ray instruments, and you'll see a background radiation in all directions. Astronomers think these X-rays…
A New View of Quasars
Some of the brightest objects in the Universe are quasars. A mystery for decades, most astronomers now believe quasars are…
Magnetic Fields Help Black Holes Pull In Matter
Even though the gravity from black holes is so strong that light can't even escape, we can see the radiation…
Everything’s on the Menu for Supermassive Black Holes
The supermassive black holes that lurk at the heart of most galaxies have enormous appetites. They've already consumed millions of…
Podcast: Dark Energy Stars
Black holes... you know. Cosmic singularities that can contain the mass of billions of stars like our Sun. Where the…
The Sky is Full of Black Holes
Astronomers have been puzzling over a mystery for a few years now, and they think they might have an answer.…