The Hubble Space Telescope has once again provided astronomers with invaluable insights into the mysteries of the universe.

This stunning Hubble view of spiral galaxy UGC 11397 captures more than graceful arms and glowing stars—it hides a ravenous ...

NASA/ESA's Hubble Space Telescope captures an image of the active galactic center in spiral galaxy UGC 11397, located in the ...

So researchers consider Z 229-15 a nesting doll of definitions. From the outside in, it is a Seyfert galaxy containing a quasar that, by definition, hosts an AGN.

Later, Edwin Hubble’s “tuning fork” classification of galaxies, from ellipticals and spirals to the anomalous lenticulars and irregulars he also observed, became part of the astronomical ...

There are other types of AGN. Seyfert galaxies have an accretion disk but no bright jet and generally weaker activity than a quasar. They can be split into two different classes, ...

A whirling image features a bright spiral galaxy known as MCG-01-24-014, which is located about 275 million light-years from Earth. In addition to being a well-defined spiral galaxy, MCG-01-24-014 ...

When astronomers first identified Seyfert galaxy NGC 1068 as the likely origin of high-energy neutrinos in 2022, it came as a surprise to some. Many astronomers at the time didn’t think this ...

So much about galaxies remains a mystery. We know what they're made of and that we live in one (the Milky Way), but how many galaxies are in the universe?

Light from the spiral galaxy UGC 11397 in Lyra took 250 million years to reach Hubble, capturing a glimpse of the distant ...