On Nov. 22, 2014, astronomers spotted a rare event in the night sky: A supermassive black hole at the center of a galaxy, nearly 300 million light years from Earth, ripping apart a passing star. The event, known as a tidal disruption flare, for the black hole's massive tidal pull
Astronomers have used data from NASA's Chandra X-ray Observatory to capture a dramatic image of an enormous tail of hot gas stretching for more than a million light years behind a group of galaxies that is falling into the depths of an even-larger cluster of galaxies. Discoveries like this help
There are many strange galaxies out there in space, but about 300 million light-years away is one that's really something. It's called AM 0644-741, or the Lindsay-Shapley Ring, and it's what is known as a ring galaxy - shaped like a ring, with a darker region in the centre.