The event, described by scientists as "very rare, beautiful, and even a bit strange," involved a cold prominence rich in neutral hydrogen that was released and scattered throughout the corona.

In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again by 2020 -- only to dramatically increase its output again in 2023.

Twin jets erupt from a supermassive black hole in Draco, offering new insights into black hole activity and evolution.

Plasma jets erupting from a supermassive black hole in galaxy 1ES 1927+654 provide new insights into jet formation.

A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could they be?

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International teams of astronomers monitoring a supermassive black hole in the heart of a distant galaxy have detected features never seen before using data from NASA missions and other facilities.

The M87* black hole exhibits chaotic gas flow and plasma ring dynamics, offering new insights into black hole physics.

In 2018, astronomers at MIT and elsewhere observed that the black hole's corona -- a cloud of whirling, white-hot plasma -- suddenly disappeared, before reassembling months later. The brief though ...

an international team of scientists made the first-ever detection of a mid-IR flare from Sagittarius A*, the supermassive massive black hole at the heart of the Milky Way. In simultaneous radio ...

Active galaxy 1ES 1927+654, circled, has exhibited extraordinary changes since 2018, when a major outburst occurred in visible, ultraviolet, and X-ray light. The galaxy harbors a central black ...