Across
- 2. The largest gas giant in the system.
- 5. A ball of ice and dust with a long tail.
- 7. A giant cloud of dust where stars are born.
- 8. The empty area between planets and stars.
- 9. The area between Mars and Jupiter full of rocks.
- 10. The largest moon of the planet Saturn.
- 12. The icy blue planet that rotates on its side.
- 14. The natural satellite that orbits Earth.
- 15. A rocky object found in a belt near Mars.
- 18. A robot used to explore the surface of Mars.
- 20. A vehicle used to travel into outer space.
- 22. A term used to describe things related to the Sun.
- 23. A hole on a moon caused by a space rock.
- 25. Once called the ninth planet, now a dwarf.
- 26. The Sun provides this so we can see.
- 29. Small planets are rocky, while giants are ____.
- 30. The name of the galaxy we live in.
- 32. The very hot center of a planet or star.
- 34. The hottest planet with very thick clouds.
- 35. The force that pulls objects toward each other.
- 37. One full spin of a planet on its axis.
Down
- 1. The farthest major planet from the Sun.
- 3. A large round object that orbits the Sun.
- 4. The curved path an object takes around a star.
- 6. The planet famous for its beautiful rings.
- 8. A giant ball of hot gas like the Sun.
- 11. The invisible line a planet spins around.
- 13. A small type of planet like Eris or Pluto.
- 14. The red planet located next to Earth.
- 16. The four planets closest to the Sun are ____.
- 17. The small planet closest to the Sun.
- 19. The time it takes for a planet to go around the Sun.
- 21. A tool used to look at distant planets.
- 24. Circular bands of dust and ice around planets.
- 27. A huge collection of stars, gas, and dust.
- 28. The star at the center of our neighborhood.
- 31. Life that might exist on other worlds.
- 33. The third rock from the Sun and our home.
- 34. A word for the vast emptiness of space.
- 36. The Sun and everything orbiting it is a ____.