Stars, constellations, and a bit more

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Across
  1. 2. The ___'s orbit is shaped like an egg, not a circle
  2. 4. We have _____ because of the tilt of the Earth.
  3. 6. Stars are made of ________.
  4. 7. Stars make their own __________.
  5. 9. When part of the Earth faces the sun, it is ____time.
  6. 11. _______ is when the Earth goes around the sun.
  7. 12. One revolution of the Earth is 365 ______________.
Down
  1. 1. A ____________ is a group of stars.
  2. 3. ___________is when the Earth spins on its axis.
  3. 4. _______don't twinkle. Their light just bends.
  4. 5. When the Earth faces away from the sun, it is ___time.
  5. 8. One rotation of the Earth is 24 _____________.
  6. 10. We have ________ seasons.