Across
- 2. a long trip
- 5. an electrical wave sent through the air
- 10. a creature that may exist outside the Earth
- 14. a vehicle that can travel very fast
- 15. to look carefully to find out something
- 16. an object in space that travels around the sun, it leaves a bright long line in its path
- 18. the act of traveling around to discover a thing or place
- 19. station a vehicle that provides houses for astronauts and used for doing scientific tests
- 20. information, facts
Down
- 1. to talk about something with others
- 3. all things such as planets, stars, galaxies etc. that exist in space
- 4. a large object in space that moves around the sun
- 6. a person who has trained to travel in space
- 7. to discuss a topic in which two or more groups disagree and agree on
- 8. a large group of stars
- 9. the universe, outside the Earth
- 11. a vehicle that is used for travel in space
- 12. the gasses surrounding the Earth
- 13. to follow the curved path around something such as the sun
- 17. system the sun and planets that move around it