Across
- 3. the natural satellite of the earth venus second planet from the sun
- 4. travel through an unfamiliar area to learn about it.
- 6. a vehicle that is used to travel in space
Down
- 1. person who travels in space
- 2. the star that the Earth orbits around
- 3. closest planet to the sun
- 5. to send or shoot a rocket up in space