Across
- 6. 'a place used to study the sun, moon, stars, and outer space.'
- 7. 'to find one's ways'
- 8. 'extremely cold.'
- 9. half of the earth, usually as divided into northern and southern halves.'
Down
- 1. 'a number of things of the same kind that are together in a group.'
- 2. 'the surface of the land and its features.'
- 3. 'a massive collection of billions of stars, dust, and gas, like Andromeda'.
- 4. 'to turn about on an axis or a center.
- 5. 'a force that pulls things toward one another.'
- 8. 'join together.'