Stars

1. / explosion of a supergiant star
2. / the point near a black hole in which nothing can escape
5. / the brightness by which stars are measured
6. / a neutron star that emits radiation pulses
8. / Black holes formed by the collapse of individual stars are relatively small, but incredibly dense
9. / a dull star with a low density
10. / are remnants of stars that have reached the end of their life
11. / beginning stage of a star made of dust and gas

1. / the largest black holes which are at the center of most galaxies
3. / a star with a high density and lumosity
4. / are formed when a red giant forms from a main sequence star and a red giant sheds its outer layers that is why they have a circular shape
7. / ______: the force that pulls together dust and gas to form the core of stars