When black holes collide, the ensuing cosmic drama was assumed to play out under the cloak of darkness, given that both objects are invisible. But now astronomers believe they have made the first optical observations of such a merger, marked by a blaze of light a trillion times brighter than the sun.
Galaxy clusters are among the largest structures in the universe, containing thousands of individual galaxies, dark matter and hot gas. At the heart of the Ophiuchus cluster there is a large galaxy that contains a supermassive black hole with a mass equivalent to 10 millions suns.
The Solar Orbiter spacecraft, a joint Nasa and European Space Agency (ESA) mission, is set to be launched from Cape Canaveral just after 4am UK time on Monday morning, and will reach its vantage point above the planetary plane by the end of 2021.
First observations from Inouye telescope bring previously hazy star into sharp focus.
The striking images reveal a surprising level of structure hidden within the churning plasma exterior, bringing a previously hazy impression of the sun’s patchwork surface sharply into focus for the first time.
Prof Claudia de Rham’s ‘massive gravity’ theory could explain why universe expansion is accelerating
Objects raise hopes of scientists managing to track ‘blobs’ being swallowed by black hole
A number of bizarre shape-shifting objects have been discovered close to the supermassive black hole at the centre of the Milky Way.
The blobs are thought to be giant stars that spend part of their orbits so close to the black hole that they get stretched out like bubble gum before returning to a compact, roughly spherical form.
Scientists say Milky Way’s Sagittarius A* has been more active in recent months. Unseeable and inescapable, black holes already rank among the more sinister phenomena out in the cosmos. So it may come as disconcerting news that the supermassive black hole at the centre of the Milky Way appears to be growing hungrier.