Formation of the solar systems

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Across
  1. 1. The force of attraction that pulled dust and gas together.
  2. 4. The flattened, spinning shape the solar nebula took as it collapsed.
  3. 5. The space existing between stars, often filled with gas and dust
  4. 6. A large cloud of gas and dust in space, the birthplace of stars and planets.
  5. 8. The inward motion of a nebula caused by its own gravity.
  6. 9. A young star in the early stages of its formation, before it begins nuclear fusion.
  7. 10. Tiny, solid building blocks of planets that formed in the early solar nebula.
Down
  1. 2. The gradual accumulation of matter by an astronomical body, usually caused by gravity.
  2. 3. The process where denser materials sink to the center of a planet and lighter materials rise.
  3. 7. WIND: A stream of charged particles that blew away the leftover gas from the forming solar system.