Black Holes

3. Tells you when something is moving towards Earth.
5. Black hole made from dead stars
6. Measured in luminosity. Not even this can escape a black hole.
8. Where mass is crushed to infinite density, gravity becomes infinite, and spacetime breaks down
9. This type of Black hole hundreds of thousands to billions of times the Sun’s mass
12. Tells you when something is moving away from Earth.
13. Found in star clusters and in the centers of smaller galaxies
15. Stellar explosion of a massive star.
16. Name of the Milky Way's supermassive black hole

1. Proven by Einstein's theories and observations.
2. A force that pulls objects together
4. Process where forces near a black hole stretch an object and turn it into a long and thin strand like spaghetti
7. Luminous centers of galaxies
10. Boundary where no light can exit
11. The galaxy Earth is located in.
14. Swirling gas and dust