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

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

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

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 ...

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 ...

So, Z 229-15 is a Seyfert galaxy that contains a quasar, and that, by definition, hosts an AGN. Classification in astronomy can be a challenge! Show full article ...

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 ...

However, Seyfert galaxies are unique from other sorts of AGNs because the galaxy itself can still be clearly seen -- different types of AGNs are so bright that it's nearly impossible to observe ...