Across
- 4. The path an object takes around a star, planet, or moon
- 5. The closest planet to the Sun
- 8. Big balls of frozen gas, dust, and rock orbiting the Sun
- 11. Covers 70% of Earth’s surface
- 12. Now called a dwarf planet
- 13. Our solar system is part of this galaxy
- 14. The collection of 8 planets and their moons orbiting the Sun
Down
- 1. The branch of science dealing with celestial objects and space
- 2. Layer of gas that surrounds a planet
- 3. Named the red planet
- 6. Bright lights in the sky from particles burning up (shooting stars)
- 7. The force that keeps a planet moving and not falling
- 8. An event where two bodies exert forces in a short time (like an impact)
- 9. Rocky space objects between the orbits of Jupiter and Mars
- 10. The largest planet in our solar system