Active Galactic Nuclei 

Part of: Prelims and GS-III Space 

Context: A roughly dough-nut-shaped cloud of cosmic dust and gas covering a huge black hole at the center of a galaxy Messier 77, which is similar in size to the Milky Way, was recently observed.

Key takeaways 

Active galactic nuclei

Black holes

Messier 77

News Source: TH

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