Across
- 4. A celestial body that orbits a planet.
- 7. The force that keeps planets in orbit around the sun.
- 8. The phase of the moon when it is fully illuminated.
Down
- 1. A small body of ice, rock, and dust that orbits the sun, often with a visible tail.
- 2. The closest star to Earth
- 3. The natural satellite of the Earth.
- 5. The planet known as the Red Planet.
- 6. Our galaxy.
- 7. A large system of stars, gas, and dust, held together by gravity.