Across
- 2. The spinning of a planet or moon on it's axis
- 5. The force that attracts bodies towards each other
- 7. The four inner rocky planets known as Mercury,Venus,Earth and Mars
- 10. A larger layer of gases surrounding a planet,star,or moon
Down
- 1. An imaginary line through the center of a body around,which it rotates
- 3. The curved path of a celestial object around a star,planet, or moon
- 4. The four outer large gaseous planets known as Jupiter,Saturn,Uranus and Neptune
- 6. A cloud of dust and gas where stars are born
- 8. The star at the center of our solar system
- 9. A meteoroid that burns up in earth's atmosphere