black holes

Burping Black Holes

Outflowing gas is a common feature of the supermassive black holes that reside in the centre of large galaxies. Millions to billions of times more massive than the Sun, these black holes feed off the…


Black Hole watching

They have built an Earth-sized “virtual telescope” by linking a large array of radio receivers – from the South Pole, to Hawaii, to the Americas and Europe. There is optimism that observations to be conducted…


A Sustained Tidal Disruption Event

Every so often, an object will pass too close to a black hole and be ripped apart by its intense gravitational forces. As the object, such as a star, approaches the danger zone of the…


Black holes becoming visible (sort of)

Black holes are elusive, but not rare. Like nocturnal creatures perfectly camouflaged for night, they are exceedingly difficult to detect. Some come out of hiding by devouring a nearby star or other nearby material, which…


Tentacles in space

New observations from the NASA/ESA Hubble Space Telescope have revealed the intricate structure of the galaxy NGC 4696 in greater detail than ever before. The elliptical galaxy is a beautiful cosmic oddity with a bright…


The Dark Wanderer

Astronomers have used NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton X-ray observatory to discover an extremely luminous, variable X-ray source located outside the center of its parent galaxy. This peculiar object could be a wandering…


Bright pitch black hole

Black holes are pitch black celestial objects which suck in even light. Matter and light that are pulled in are unable to ever escape again. But is it possible to use observations to find these…