Across
- 2. how long it takes to complete a revolution
- 4. dust particles released from comet, curves
- 7. small fused grains of interstellar dust
- 8. comets coming from the Oort cloud
- 9. accumulation of matter through collisions
- 11. when ice turns directly to gas
- 14. serves as condensation nuclei in space
- 16. hot condensed ball of gas/dust @ nebula center
- 17. a symmetrical oval
- 18. name for a protostar that achieves nuclear fusion
- 20. gas particles released from comet, straight kuiperbelt region of frozen bodies @ solar system edge
- 21. space rock
- 22. when a space rock enters atmosphere and glows meteorshower when Earth passes through comet debris meteorite a space rock that lands on Earth's surface solarnebula a cloud of dust/gas that forms solar system
Down
- 1. Explanation of solar system formation
- 3. formed from condensed planetesimals
- 5. leftover material at edges of solar system
- 6. theoretical region around entire solar system
- 7. Halo of sublimated gas around a comet
- 10. frozen bodies of gas+dust
- 12. ring of planetesimals between Mars/Jupiter
- 13. anything that orbits another body shortperiodcomets comets coming from the Kuiper belt
- 15. attractive force between masses
- 19. formed from condensed chondrules