Across
- 4. transform a planet to make it like Earth
- 6. locations on a planets surface where the axis meets the surface
- 7. the natural satellite of a planet
- 8. an expert of student of astronomy
- 9. travel around an object due to gravity
Down
- 1. giant holes in the ground
- 2. to enter as an enemy, by force, to plunder or conquer
- 3. a thin layer of gasses that hover above a planets surface
- 5. a thick subsurface layer of soil that remains frozen
- 7. a small body of matter visible when entering Earths atmosphere