Across
- 5. a body that could or did come together with many others under gravitation to form a planet.
- 6. a cliff or steep slope
- 8. the main constituent of gas giant planets
- 10. A large-scale linear or curved array of mineral deposits
- 11. happens when Earth passes through the path of a comet
- 13. a small body from outer space that enters earths atmosphere
- 15. a measure of how much the deviation of the curve has occurred from the circularity of the given shape
- 16. a solid piece of debris from an object, such as a comet or asteroid
- 17. a planet that is composed primarily of silicate rocks or metals
Down
- 1. a unit of measurement equal to 149.6 million kilometers
- 2. a small planet but lacking certain technical criteria that are required for it to be classed as such.
- 3. a giant planet composed mainly of hydrogen and helium
- 4. circumstellar disc in the outer Solar System
- 7. a small body moving in the solar system
- 9. frozen leftovers from the formation of the solar system composed of dust, rock, and ices
- 12. the orbital motion of a spatial body in a direction that is opposite of what is normal in a given system
- 14. a circle which has been squashed or flattened a bit