Space!!!!!!!!!!!!!!

3. You need to do this before going on a mission.
4. the layer(s) of gas that surround some planets.
5. Those little dots that are visible in the night sky.
8. The only planet confirmed to have life.
10. The big boss of the Solar System. Protects us from comets and asteroids.
11. An object that orbits a star, has enough gravity to clear its orbit, and must be spherical.
12. A planet that orbits a star(s) outside our Solar System.
14. the distance in which light takes 1 second to travel.
16. The main measurement of Earth.
18. A type of planet covered in ice or ocean water.

1. Respectfully the stinkiest planet of the Solar System. Has a tilt of 98 degrees.
2. A planet that does not orbit a star(s) and wanders the universe by itself and possibly a few moons.
6. The reflectiveness of a planet.
7. The star of the show! Literally...
9. the distance in which light takes 1 day to travel.
13. the distance in which light takes 1 year to travel.
15. A hypothetical hycean world beleived to have been ejected from the early Solar System
17. Formed when a planet or moon gets ripped apart by the Roche Limit.