Across
- 1. A layer of gases around a celestial body
- 3. A planet primarily composed of hydrogen and helium gas
- 4. A region in space between the orbits of mars and Jupiter
- 5. The way of which something is made up
- 8. the force of attention between all masses in the universe
- 9. The planets and their moons and other celestial bodies
- 10. All existing matter in space
Down
- 2. The ability to be maintained
- 6. Uppermost layer of something
- 7. A planet which surface is made up of ice