Across
- 4. an object moving around a star
- 5. a shooting star
- 6. system the system of planets and other objects orbiting the sun
- 7. a grouping of stars
- 9. the space that contains all the matter and energy in existence
- 10. an object from space like a rock that falls to the earth
Down
- 1. a hole caused by an object hitting the surface of a planet or moon
- 2. the amount of time it takes for the earth to spin once on its axis
- 3. the gaseous area surrounding a planet
- 8. the path one object takes around another