Wonders 3.3

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Across
  1. 1. the sun and the planets that move around it
  2. 3. the study of stars and planets
  3. 5. heat
  4. 6. how much of something there is
  5. 7. how hot of cold something is
Down
  1. 1. provide what is needed for something
  2. 2. the outside of something
  3. 4. the world