Across
- 3. Older galaxies that are some of the largest but don't have as much gas
- 7. gravitationally bound system that contains stars and different planets.
- 9. Gigantic explosion of a large star
- 11. large cloud of gas and dust in the space
- 13. Force that keeps things/people on the center of earth
- 14. A standard unit of measurement
Down
- 1. information that supports or refutes a theory
- 2. The galaxy in which everything is located in
- 4. Average distance between earth and the sun
- 5. all space, time, matter, and energy that exists
- 6. An object so dense that nothing within a certain distance can escape
- 7. A tested and confirmed theory that is well explained
- 8. Most of the known galaxies is this:
- 10. unit of length equal to how far light moves in a year
- 12. Collection of stars, dust, and gases that are held by gravitational forces