Down |
1. | The third of the gas giants |
2. | First man on the moon |
3. | What does a U.F.O. stand for |
4. | more than 8,000 artificial of these in the sky |
6. | It is now the smallest planet in our solar system |
7. | Man made robotic machine that explores planets |
10. | Its atmosphere traps in the heat |
12. | Name of the first ship on moon |
13. | Made up of dirty ice and and rock |
15. | Every planet in our solar system revolves around it |
19. | Only planet with know life |
20. | What are the two main elements that makes up the ring around saturn |
21. | A massive explosion that created our solar system |
23. | Made up of astroids that go around a planet |
24. | Is the biggest planet in our solar system |
29. | True or false, water existed on mars. |
30. | when was pluto classified a dwaf planet |