A black hole spinning at nearly the speed of light was discovered in the center of one known as MCG-6-30-15, while M84 and M85 are ones found in the Messier catalog.
The nearest one is sometimes called "The Ghost of Mirach" because it lies in the light of the red giant star of that name. A black hole spinning at nearly the speed of light was discovered in the center of one known as MCG-6-30-15, while M84 and M85 are ones found in the Messier catalog. Because they contain mostly old Population II stars, they are often mistaken for (*) elliptical galaxies when viewed face-on. According to one theory, they were once spiral galaxies whose interstellar material has since been lost or used up due to interactions with other galaxies. Located at the fork of the Hubble classification diagram, these are, for 10 points, what disk-shaped galaxies with no spiral arms and practically no star formation?
The nearest one is sometimes called "The Ghost of Mirach" because it lies in the light of the red giant star of that name.
{lenticular} galaxies or {S0} galaxies (5) [BH]