Across
- 2. The time taken for the Moon to orbit the Earth once
- 6. An icy object that has a long tail
- 7. Third rock from the Sun
- 9. A group of stars seen in the night sky are given names
- 11. The name of the space project that landed man on the Moon
- 14. Name given to a star exploding
- 18. Unidentified flying objects
- 19. Billions of stars form this structue
- 20. A rock from space
- 22. A plant that has a ring aound it
- 23. No longer called a planet
- 24. Number of moons on Mars
- 25. The brightest star seen from Earth
- 27. A belt of rocks between Mars and Jupiter
- 30. 365 days
- 31. A metal only created in exploding stars
Down
- 1. We need this for life
- 3. Motion of planets around the Sun
- 4. Where you can find the Sea of Tranquility
- 5. Hottest planet in the Solar System
- 7. When the Moon covers the Sun completely
- 8. The name of our galaxy
- 10. Name given to planets orbiting other stars
- 12. A gas needed for life
- 13. The force that keeps planets in orbit
- 14. A film which had two Suns
- 15. The planet with a giant red spot
- 16. A planet that looks like a red star from Earth
- 17. They once ruled the Earth
- 21. A moon of Jupiter
- 26. Superman gets his powers frm this
- 28. Largest moon of Saturn
- 29. A metal at the cor of the Earth