Across
- 2. number of planets in our solar system
- 4. warmest planet; cloudy planet
- 6. large planet known for the Great Red Spot
- 8. the star closest to Earth
- 10. the force that pulls you towards the center of a planet or star
- 11. third planet from the sun; only planet people have walked on
- 13. the red planet; humans have sent robots here
- 15. number of stars in our solar system
- 16. planet with the brightest rings
- 19. dwarf planet with two moons
- 20. place where astronauts live and work in space
- 21. it takes Earth 365 days to ___ the sun
Down
- 1. furthest planet from the sun
- 3. our sun and the objects that orbit around it
- 5. an American space traveler
- 7. instrument used for seeing stars and planets clearly
- 9. planet that rotates on its side
- 12. Saturn, Jupiter, Uranus and Neptune have ___ around them
- 14. planet closest to the sun
- 17. to turn on an axis
- 18. Neil Armstrong was the first person to walk on the...