Across
- 2. The process of a substance transitioning directly from solid phase to gas phase, often observed in icy bodies like comets.
- 4. A gravitationally bounded system of stars, planets, gas, dust, and dark matter all held together by gravity.
- 6. The largest planet in our solar system.
- 8. The process of the gradual wearing away of a celestial body's surface by natural forces such as wind, water, and ice.
- 10. The smallest planet in the solar system, located closest to the Sun.
- 11. The fourth planet from the Sun, often called the "Red Planet" due to its reddish appearance.
Down
- 1. The layer of gases surrounding a planet, such as Earth's atmosphere, which helps protect life by trapping heat and blocking harmful radiation.
- 3. The planet with the most prominent ring system.
- 5. A solid piece of debris that survives its passage through the Earth's atmosphere and lands on the Earth's surface.
- 7. The force of attraction between objects with mass, responsible for keeping planets in orbit around the Sun.
- 9. The star that is located at the center of our Solar System which continuously provides light and heat.
- 11. The natural satellite that orbits our Earth.
