Across
- 2. to travel from one place to another
- 6. a person whose job it is to travel into outer space
- 7. area beyond Earth that has stars, planets and moons
Down
- 1. air that surrounds a planet
- 3. to move around a star or planet
- 4. a large group of stars and planets
- 5. anything that isn’t a liquid or a solid, including the air all around us
- 7. vehicle used for traveling in space