Across
- 1. zero, lowest temperature possible
- 2. tectonics, the movement of the earth's crust
- 4. a cloud of dust in space
- 7. living object that can function on its own
- 9. a celestial body that orbits a sun
- 11. lets gas and liquid through it
- 13. rock, a rock formed by clay
- 14. rain, when gas emissions combine with water
Down
- 1. someone who studies planets and space
- 3. erosion by friction
- 5. hole, the result after a star collapses
- 6. the patha celestial body follows
- 8. fission, when two atoms fuse together
- 10. a part of an atom with neutral charge
- 12. a celestial body made of rock