Earth, Sun and Moon Systems

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Across
  1. 1. the _____ time zone receives the sunlight first in the United States
  2. 4. the first astronomer who challenged the geocentric model
  3. 7. the sun-centered model of the solar system
Down
  1. 2. the earth makes one _____ in 24 hours
  2. 3. the earth centered model of the solar system
  3. 5. invented the telescope to observe the moons on Jupiter
  4. 6. the astronomer credited with the geocentric model