Across
- 3. The action of the earth spinning on its axis
- 6. An artificial body afloat in space that provides information back on earth
- 7. The study and belief of planets movement affecting things in the natural world and human affairs
- 8. The line the earth travels on when revolving around the sun
Down
- 1. The only planet known to have life on it
- 2. A force that brings all objects with mass are brought towards one another
- 4. The study of planets, stars and other celestial objects
- 5. To move in a circular orbit around something