Across
- 1. A person whose job is to travel and work in space.
- 3. A large group of stars and planets held together by gravity.
- 4. The layer of gases surrounding a planet or other object in space.
- 7. An object that moves around a planet, either naturally or made by humans.
- 8. The curved path followed by a planet, moon, or spacecraft around another object.
Down
- 2. A vehicle designed to travel in space.
- 5. An instrument used for seeing objects that are far away, especially in space.
- 6. All space, including all the stars, planets, and everything that exists.