Across
- 3. the sun, and its gravitationally bound orbiting objects
- 5. distance that light travels in one year
- 9. layer of gases that surround a heavenly body
- 10. 9th planet that was downgraded to a dwarf planet in 2006
Down
- 1. small, icy body that orbits the sun in a highly elliptical path
- 2. regular, curved path that an object takes around another heavenly body
- 4. any object that orbits a planet, star, or moon
- 6. spherical heavenly body that orbits the sun and has cleared its path of other debris
- 7. small, rocky body that orbits the sun
- 8. massive interstellar cloud of dust and gas where stars are born