black hole

Mr. Cannibal neighbor

An extraordinarily brilliant point of light seen in a distant galaxy, and dubbed ASASSN-15lh, was thought to be the brightest supernova ever seen. But new observations from several observatories, including the NASA/ESA Hubble Space Telescope,…


The Black hole that shouts “Feed me, Seymour!”

Astronomers may have solved the mystery of the peculiar volatile behavior of a supermassive black hole at the center of a galaxy. Combined data from NASA’s Chandra X-ray Observatory and other observatories suggest that the…


It came from another dimension

The article mentioned in this post can be found in the August 2014 edition of Scientific American, The Black Hole at the Beginning of Time by Niayesh Afshordi, Robert B. Mann and Razieh Pouhasan. If…


Fake black hole, fake radiation?

Black holes are not actually black. Instead, these gravitational sinks are thought to emit radiation that causes them to shrink and eventually disappear. This phenomenon, one of the weirdest things about black holes, was predicted…


Eyeing the Beast Within

At the center of our Milky Way galaxy lies a cosmic beast called Sagittarius A*. This supermassive black hole packs about four million sun-masses into a volume roughly the size of our solar system. Recently,…


Afterglow bumping on a black hole

A jet from a very distant black hole being illuminated by the leftover glow from the Big Bang, known as the cosmic microwave background (CMB), has been found as described in our latest press release….


Measure a black hole shadow

Einstein’s theory of general relativity may soon be put to the ultimate test through measurements of a black hole’s shadow, say a pair of Perimeter researchers. Even though it is over 100 years old, Albert…