Across
- 2. the 7th planet from the Sun that rotates horizontally on its axis
- 3. when a meteoroid makes contact with a planet's atmosphere and burns up
- 5. the head or solid part of a comet
- 8. small pieces of rock or metal that travel through space
- 11. the 4th planet from the Sun, sometimes called the 'Red Planet'
- 13. Jupiter, Saturn, Uranus, and Neptune
- 15. when the Earth is closest to the Sun
- 17. a curved path of an object around another object in space
- 18. the 6th planet from the Sun best known for its rings
- 20. Mercury, Venus, Earth, and Mars
- 22. region beyond Neptune made of small icy 'bodies'
- 23. small pieces of a meteor that contact a planet's surface
- 24. the closest planet to the Sun
- 26. the gas cloud that surrounds the nucleus of the comet
Down
- 1. area made of asteroids that separates the inner and outer planets
- 4. the 2nd planet from the Sun that spins in the opposite direction of other planets
- 6. a spinning cloud of gas and dust
- 7. a lump of ice, frozen gas, and dust with a large orbit around the Sun
- 9. planet-like objects that orbit the sun
- 10. the 8th planet from the Sun that is also the windiest planet
- 12. the Sun and all the objects that orbit it
- 14. the 3rd planet from the Sun that has oceans of liquid water
- 16. the 5th planet from the Sun and also the largest
- 19. a large chunk of rock or metal that orbits the sun
- 21. when the Earth is furthest from the Sun
- 25. the long, ribbon-like trail of comet dust and gas