Space crossword

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Across
  1. 3. the sixth planet from the sun and the second largest in our solar system.
  2. 4. an icy small celestial body that orbits the sun.
  3. 5. star any small relatively dim star or the dead remnant of a star.
  4. 7. bang theory the leading scientific explanation for the origin that nothing can escape.
  5. 9. years the total disaster a beam of light travels through a vacuum in one earth year.
  6. 10. the colossal , highly luminous explosion of a star.
Down
  1. 1. the fundamental building block of all matter in the universe.
  2. 2. a bowl shaped depression or cavity in a surface typically caused by a volcanic eruption.
  3. 6. dwarf the extremely dense cooling core left behind by a dying low to medium mass star.
  4. 8. hole a region in space where the pull of gravity is so intense that nothing can escape.