Across
- 1. The initial explosion that resulted in the formation and expansion of the universe
- 3. The shape of our Milky Way, has 2 main spiral arms
- 5. The name of the galaxy in which our solar system exists
- 6. The branch of science that studies objects in space
- 10. The group of galaxies that includes the Milky Way and 50 other galaxies
- 11. A mass concentration of galaxies, including out local group
- 12. The tendency of an object to resist change in motion
Down
- 2. A huge group of single stars, star systems, star clusters. dust and gas bound by gravity
- 4. A region of spacetime where gravity is so strong that not even light can escape
- 7. An idea that something is true but cannot be proven
- 8. The Earth is in the center of our solar system
- 9. The sun is in the center of the solar system
- 11. Something that can be proven over and over again