Across
- 1. A small body that generally revolves about the sun in an elongated orbit.
- 3. A solid celestial body that accumulated during the 1st stages of formation.
- 6. a small rocky body orbiting the sun.
- 9. a large body of matter in orbit around the sun or a star and thought to be developing into a planet.
Down
- 1. The fuzzy, gaseous component of a comet's head.
- 2. Small solid particles that have orbits in the solar system
- 4. Any portion of a meteoroid that survives its traverse through Earth's atmosphere and strikes Earth's surface.
- 5. The small heavy core of an atom that contains all of its positive charge and most of its mass.
- 7. a small rocky or metallic body in outer space.
- 8. Smooth areas of the moon formerly thought to be seas.