Across
- 4. the third planet from the sun
- 6. an object in orbit of an another object
- 7. the study of movements of celestial bodies interpreted as having an influence on human affairs and the natural world
- 8. spin on a axis
Down
- 1. a non contact force which acts on every object with mass
- 2. move in a circle around sun
- 3. the path a planet takes around the sun
- 5. study of space