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.

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.

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

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

Learn about the two NASA missions that hope to unlock the secrets behind multiple types of auroras by studying the role of ...

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.

After an extended period of quiescence since a mysterious flare-up in 2018 ... had "turned on," blasting hot blobs of plasma from both sides of the black hole at about one-third the speed of ...

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 ...

The researchers made new radio observations, discovering that a strong and unusual radio flare was underway ... ionized gas, or plasma, extending from either side of the black hole – a rarity ...

For the first time, scientists witness a supermassive black hole releasing jets of material at immense speeds, offering a glimpse into jet formation and propagation in active galactic nuclei.

“We think the outflow began earlier, when the X-rays increased prior to the radio flare ... of supermassive black holes are known to produce such high-speed plasma ejections.

Radio images of 1ES 1927+654 reveal emerging structures that appear to be jets of plasma erupting from both sides of the galaxy’s central black hole following a strong radio flare. The first ...