Astronomy Crossword

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Across
  1. 2. The galaxy our solar system is in.
  2. 5. Discovered 4 moons orbiting Jupiter with telescope.
  3. 6. What do astronomical units measure.
  4. 7. Shooting star.
  5. 10. Outer planets are made mostly of.
  6. 12. Space rock that makes it to earth's surface.
  7. 13. Proposed geocentric model.
Down
  1. 1. First proposed heliocentric model.
  2. 3. Found in belt between Mars and Jupiter.
  3. 4. Sun centered solar system.
  4. 7. The red planet.
  5. 8. Inner planets are made mostly of.
  6. 9. Earth centered solar system.
  7. 10. Why planets orbit the sun.
  8. 11. Proposed elliptical orbit of planets.