Across
- 2. a large system or group of stars that are in outer space.
- 5. a large round object in space that moves around a star (such as the sun).
- 6. the area outside of the earth where all the other planets and stars are.
- 7. an act of traveling to a place and not coming back.
- 8. all of space and everything in it, including the earth, the planets and the stars.
- 12. a person who travels in a spacecraft and works in outer space.
Down
- 1. a path that a planet or moon makes when it goes around a sun or another planet.
- 3. the gases that surround the earth.
- 4. a vehicle that travels in space.
- 6. the sun and all the planets that move around it.
- 9. the planet that we live on.
- 10. an act of traveling from one place to another place that is far away.
- 11. a substance like air that isn't a solid like a rock or a liquid like water.
- 13. to go from one place to another, especially over a long distance.