Across
- 3. one of Venus' moons that has oxygen
- 6. the study of the universe beyond earth's atmosphere
- 8. planets that can contain life are _______
- 9. extraterrestrial life
Down
- 1. life needs _______
- 2. gasses surrounding a star/planet
- 4. scientists who study space
- 5. humans will find aliens in the next _______
- 7. there are over 300 _______ habitable planets
- 10. international space centre