Across
- 4. a gas that forms on jupiter and saturn at -124 celsius
- 5. planets that have fast orbits
- 6. gases that protect a planet
- 8. an object that orbits a planet
- 9. earth like planet
- 10. move repeatedly around an object
Down
- 1. layers of various gases
- 2. big planets that are made up of gas
- 3. celestial objects that separate the inner and outer planets
- 7. a planets core that is made of liquid heavy metals