Space Physics

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Across
  1. 2. Red giant outter layers become a ____ nebula.
  2. 3. A natural satellite.
  3. 6. The furthest planet from the sun.
  4. 8. The closest planet to the sun.
  5. 11. Has a highly elliptical orbit.
  6. 12. rocks in space, mainly found in a belt.
  7. 13. Longer wavelengths of light as seen on the Earth.
  8. 15. Radiation observed everywhere in space.
  9. 16. Third planet from the sun.
Down
  1. 1. The Sun mostly consists of this element.
  2. 4. A large collection of stars.
  3. 5. An exploding star.
  4. 7. Most massive planet.
  5. 9. How stars create energy.
  6. 10. Before a star becomes a stable star.
  7. 14. Red giant core becomes a white ______.