Seyfert galaxies

Seyfert galaxies are a type of active galaxy with bright centers that exhibit unusual activity. They make up about 1% of all galaxies and have become a significant area of study in astronomy.
 Carl K. Seyfert United States 1943 Seyfert galaxies

Seyfert galaxies are a type of active galaxy with bright centers that exhibit unusual activity. They make up about 1% of all galaxies and have become a significant area of study in astronomy.