astronomy

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Across
  1. 3. the spring of a planet
  2. 4. a part of the sun that is colder
  3. 5. what all planets do around the sun
  4. 7. made up of gas, dust, and billions of stars
  5. 8. the gravitational pull of the moon gives us
  6. 9. it could be gassy or terrestrial
Down
  1. 1. has a circular orbit and belongs in the asteroid belt
  2. 2. the part of the sun we don't see unless it's during an eclipse
  3. 4. when the sun gives a big burst of energy
  4. 6. the visible part of our sun