Across
- 2. Chunks of rock and ice that never clumped together like the rocks and ice that formed the inner planets.
- 3. Mixture of rock, ice, and dust that orbit the Sun.
- 4. Contains at least one star and all the objects that orbit around that star. Includes, planets moons, comets, asteroids, and meteors.
- 6. A spherical object that orbits the sun, but is too small to be classified as a planet.
- 7. An object that orbits a planet, not the sun.
Down
- 1. A meteoroid that enters Earth’s atmosphere and burns up. Also known as a shooting star.
- 5. Small, rocky particles that move through space.