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Across 4. set of start on our national flag 5. used to see in space 6. spins on a axis and often points at the sun 8. the galaxy that contains our solar system 11. gets it bright blue colour from methane gas 12. the gas we breath in 13. chunks of ice left over from the formation of the solar system 14. it keeps us on the ground 17. the people who explore space 18. second man on the moon 19. similar to earth in size and mass 21. bit of rock that has come from far away and has a tail 23. has rings around it 25. an atmosphere of gases and gravity 27. occurs when moon passes behind the earth 29. we see them when we look up at the sky at night 30. jupiter, saturn, uranus and neptune are called... 31. first man on the moon 33. planets have their own 35. orbiting earth right now 37. largest planet in our solar system 38. closest planet to sun

Down 1. mercury, venus, earth and mars are called... 2. person who studies the solar system 3. the space craft that made it to the moon 7. saturn is the only planet known with them 9. most planets have them 10. third man on the moon and pilot of apollo eleven 15. bigger than the solar system but smaller than the universe 16. huge ball of hot, glowing gases 20. rocky remains 22. something that travels around another object 24. the craft that moves in space 26. the solar... 28. the red planet 32. famous space organisation 33. small particle from a comet or asteroid 34. called a dwarf planet 36. the planet we live on