Across
- 2. an object that revolves another object in space
- 4. a small rocky body orbiting the sun
- 7. the explosion of a dying supergiant
- 10. star- a star much larger than the sun
- 12. a round pit on the moons surface
- 14. a person who studies the stars and other things in the sky
- 15. the partial or total blocking of one object by another
Down
- 1. a system of billions of stars,together with gas and dust
- 3. the rise and fall of the level of water in the ocean
- 5. giant- a large reddish start late in its life cycle
- 6. a natural object that orbits a planet
- 8. the 7th planet from the sun
- 9. dwarf- the final stage of a white dwarf
- 11. the smallest planet closest to the sun
- 13. the force between two objects