Black Holes

Black holes: Objects formed when massive stars collapse due to gravity.


Supermassive Black Hole:  Black Holes found in the center of galaxies. They are up to billions of times more massive than the sun


•There are 4 main types of galaxies: spiral, lenticular, elliptical, and irregular.

Spirals: have a bulge at the center and arms of stars, gas, and dust

Lenticular: spiral galaxies that contain a bulge, but lack arms (look like disks)

Elliptical: have a bright central region with a halo of gas and dust around it (spheroid or egg-shaped)

Irregulars: have no clearly defined shape (merging galaxies may exhibit irregularities)