Astronomy Crossword

3. A system of stars, stellar, etc
7. A dusty, cold, desert world with a very thin atmosphere
11. When the sun is assumed to be near the centric point
12. An area full of icy body
16. The universe
17. An area which have a group of visible stars form some pattern
18. First planet from the sun
19. A small rocky body that moves around the sun mainly between Mars and Jupiter.
20. The curved trajectory of an object

1. The seventh planet from the sun
2. A rocky, terrestrial planet
4. A place in space where the pull of gravity is so strong that even light can't get out.
5. A small rocky in outer space
6. Covered in swirling cloud stripes
8. Someone who travels in space
9. An small Solar System that releases gases
10. A cloud of dust and gas in the space
13. When the earth is assumed to be near the centric point
14. A hot glowing ball of hydrogen and helium
15. An astronomical object held by self-gravity