Galactic nuclei images reveal how supermassive black holes interact with their surroundings using infrared telescopes.
In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again ...
Using the aging Hubble Space Telescope, Achenbach spotted an unusual spiral galaxy quasar with a visible jet. This calls into ...
The blazar, named J0410–0139, is located about 12.9 billion light-years away at the center of a galaxy. This makes it the ...
This rare quasar with spiral arms could help astronomers understand how supermassive black holes feed and grow.
These galaxies emit energy from their nucleus, or center – called the active galactic nucleus. In a process called ...
A large international team of scientists observed a rare event in real time: a dramatic increase in radio emission and the ...