Across
- 2. a quantity or number of something
- 3. the outer or top layer of something
- 5. a spherical model of Earth or another planet
- 7. the collection of planets and other objects that orbit the sun
Down
- 1. a measure of how hot or cold something is
- 3. to help or hold up something
- 4. the study of stars, planets, and space
- 6. The state of being warm; heat