A spiral galaxy with a small, compact, bright nucleus that exhibits variable light intensity and radio-wave emission.
It is not correct to talk about "the" Seyfert galaxy - Seyfert galaxies are a type of galaxy.
A Seyfert galaxy is a spiral galaxy with an active core.
Yes. A Seyfert galaxy is a type of spiral galaxy, but with an active nucleus.
Seyfert Galaxy
Most of the energy from a Seyfert Galaxy comes from invisible raio and infrared radiation.
3C 153 is a Seyfert galaxy located in the constellation Auriga.
Tim Seyfert's birth name is Timothy Dean Seyfert.
* M15 - a globular cluster near the nose of Pegasus. * NGC 7742 - a Type 2 Seyfert galaxy.
Tim Seyfert is 6' 4".
Our Milky Way has a supermassive black hole at its nucleus. It is an active radio source. It is probably not a Seyfert galaxy, which is a galaxy of a type characterized by a bright compact core that shows strong infrared emission, though.
Carl Keenan Seyfert was born in 1911.
Michael Seyfert has written: 'Im Niemandsland'