Across
- 2. the amount of matter in a object(one word)
- 7. zone area of the solar system where the sun's energy supports liquid water
- 10. measure of the force of gravity on an object (ONE WORD)
- 12. orbits the sun in an elliptical path.(one word)
- 13. between object(one word)
Down
- 1. gloves protect from radiation and freezing temps(two words)
- 3. the person that explained the concept of gravity ( person name)
- 4. protect earth from radition (one word)
- 5. holds the solar system together.(three words)
- 6. extremely hot,dense mass of gases(one word)
- 8. small mass of dust and ice that orbits.(one word)
- 9. shield protect spacecraft upon re-entry(two word)
- 11. plant's mercury,venus,earth,mars,.(two words)
- 14. jet pack to get astronauts back to the space craft(one word)