Our Place in Space

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Across
  1. 4. when a planet appears to move backwards compared to the stars
  2. 6. the visible surface layer of the Sun
  3. 7. when the Moon completely blocks the Sun
  4. 8. when only part of the Moon moves into Earth’s shadow
  5. 9. when two planets appear very close together in the sky
  6. 12. the difference between high tide and low tide
  7. 13. the band of sky where the Sun, Moon and planets appear to move
  8. 16. small rocky planets with solid surfaces
  9. 17. Moon phase where about half the Moon’s surface is visible
  10. 18. tides with very high highs and very low lows caused by the Sun and Moon working together
  11. 19. the ability of a telescope to see fine detail
Down
  1. 1. the lighter outer part of a shadow where light is only partly blocked
  2. 2. when the Moon moves completely into Earth’s shadow
  3. 3. when the Moon partially blocks the Sun
  4. 5. telescopes placed in orbit above Earth’s atmosphere
  5. 10. large dish instruments that collect radio waves from space
  6. 11. Moon phase where the other half of the Moon is illuminated
  7. 14. the darkest central part of a shadow
  8. 15. the time it takes a planet to spin once on its axis
  9. 16. the regular rise and fall of ocean water levels