Across
- 4. giant clouds of gas/rock/etc (the birthplace of stars)
- 7. a group of galaxies
- 10. ("AU") distances measured inside our solar system
- 13. Galaxies contain billions of ______
- 14. the universe contains billions of _____
Down
- 1. the name of the galaxy we live in
- 2. the number of stars inside our solar system
- 3. Pluto & Ceres have enough gravity to be round, but are ___planets
- 5. the shape of our galaxy
- 6. a larger spherical body that orbits around a sun
- 8. all of space, everything in the cosmos
- 9. distance that measures things outside our solar system far away
- 11. the name of our star in our solar system
- 12. made of helium/hydrogen gas, different colors, different sizes