Across
- 3. made of ice rock and dust
- 6. hottest planet due to its thick CO2 atmosphere
- 9. the planet most like Earth
- 10. robot explorers
- 14. farthest planet from the sun
- 15. closest planet to the sun
- 17. large chunks of rock and metal mostly between Mars and Jupiter
- 19. the only planet that can support life
- 21. a meteoroid that enters Earth's atmosphere aka shooting star
- 22. manned spacecraft that leaves for long time
- 23. satellites that orbit sun
Down
- 1. manned spacecraft for shorter stays
- 2. largest collection of telescopes found here
- 4. the largest planet and has bands of blowing winds
- 5. small pieces of rock and metal that break off comets or asteroids
- 7. sideways tilted planet with unusual color of gases
- 8. tool made by Galileo to look into space
- 11. planet with rings of rock and ice
- 12. best known dwarf planet
- 13. unmanned spacecraft
- 15. a meteor that reaches Earth's surface
- 16. how planets stay in orbit
- 18. tendency to keep moving in a straight line
- 20. object that orbits around another object