Kate Pfund

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Across
  1. 4. what remains when a supergiant star collapses into itself
  2. 6. says that the milky way isn't our only galaxy there's not just one universe
  3. 8. hot center of the nebula
  4. 10. Mercury,Venus, Mars, Earth
Down
  1. 1. what theory happened 13.7 billion years ago
  2. 2. we can only make hypothesis about this, but we know it is in space
  3. 3. how the star begins (cloud of gas and dust)
  4. 5. includes Jupiter, uranus,Saturn,Neptune
  5. 7. massive stars become this
  6. 9. a huge assemblage of stars