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Observations showing a roughly donut-shaped cloud of cosmic dust and gas shrouding a huge black hole at the heart of a galaxy similar in size to our Milky Way are providing scientists with new clarity about the universe’s most energetic objects.

Scientists on Wednesday said their observations involving the supermassive black hole at the center of galaxy Messier 77 and its surrounding cloud lend support to predictions made three decades ago about what are called"active galactic nuclei."

The energy arises from gas violently falling into a supermassive black hole that is surrounded by a cloud of tiny particles of rock and soot along with mostly hydrogen gas. Messier 77, also called NGC 1068 or the Squid Galaxy, is located 47 million light years – the distance light travels in a year, 9.5 trillion km – from Earth in the constellation Cetus.The observations, using the European Southern Observatory’s Very Large Telescope in Chile’s Atacama Desert, provided strong support for what is called the “unified model” of active galactic nuclei.

“The dust and gas in these clouds are probably blown out of the atmospheres of stars at a larger distance – hundreds of light years – from the black hole, and are falling in towards the center under the influence of the black hole gravity,” said Violeta Gamez Rosas, an astronomy doctoral student at Leiden University in the Netherlands and lead author of the research published in the journal Nature.

 

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