astronomy

2. The largest planet in our solar system
4. Reclassified as a dwarf planet in 2006
6. 1 of the two ice giants in our solar system
9. The furthest planet away from our solar system
11. Frozen leftovers from the formation of the solar system composed of dust, rock, and ices
13. An artificial body placed in orbit round the earth or moon or another planet in order to collect information or for communication.
14. More then 100 robots visited this place
15. We are in 1 but there are still many others waiting for us to discover
18. It has most extensive ring system in our solar system
19. Second closest planet to the sun
20. A space rock that survives the atmosphere and hits any type of surface

1. How our Solar system was made
3. What we use to launch things to space
4. There are 8 of these in our solar system
5. The smallest planet in our solar system
7. What we orbit on
8. The study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs and the natural world.
10. Where we live
12. A space rock
16. There are a lot of these in the sky and next to infinite in the galaxy
17. The closest planet to the earth