Across
- 3. The fourth planet from the Sun, known as the "Red Planet."
- 4. A small rocky body that orbits the Sun.
- 5. A rock or particle that enters Earth's atmosphere.
- 7. The star at the center of our solar system.
- 8. A luminous ball of gas, like the Sun.
- 10. The season when leaves fall from trees, also known as autumn.
- 14. The seventh planet from the Sun, known for its tilted axis.
- 15. The force that pulls objects toward one another, like the Earth pulls objects toward it.
- 16. A large celestial body that orbits a star.
- 18. Earth's natural satellite.
- 19. The second planet from the Sun, often called Earth's "sister planet."
Down
- 1. A vehicle designed for travel in outer space.
- 2. The warmest season of the year.
- 6. A tool used to observe distant objects in space.
- 7. The season after winter and before summer.
- 9. A vehicle used to travel in space.
- 11. The path one object takes around another, like a planet around the Sun.
- 12. A person trained to travel in space.
- 13. A system of stars, gas, and dust held together by gravity.
- 17. A small icy body that orbits the Sun.
