VIGUIER 102

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Across
  1. 3. Molecular clouds are made of gas and...
  2. 4. Stars are composed of... and helium held together.
  3. 6. Are bigger than solar systems.
  4. 8. Nuclear fusion reaction produce heat and...
  5. 9. Molecular clouds are cold and...
  6. 10. Atomes fusion which creates energy and makes the atome lose mass.
Down
  1. 1. Stars creation first step.
  2. 2. The more there is gas and dust the larger get the...
  3. 5. To create core molecular clouds needs the effects of...
  4. 7. Second name of a stars explosion.