HISTORY OF ASTRONOMY

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Across
  1. 3. the moon has this type of motion as it orbits around Earth and the sun.
  2. 6. The method Galileo developed to base findings only on observations & research and not what people think.
  3. 8. The object that Galileo did not invent but he was the first to use it to study space, the planet & the stars.
  4. 10. All solar system models were first presented to try and explain this celestial motion planets have.
Down
  1. 1. He came up with the heliocentric theory although Galileo was the first scientist to confirm that it was true.
  2. 2. The theory which states that the sun is at the center of the solar system.
  3. 4. Astronomer that was placed in house arrest for first suggesting the geocentric model that contradicted the Catholic Church.
  4. 5. The model of the solar system with the Earth standing still in the center of the solar system and the Sun, moon and all other planets orbit around it.
  5. 6. the heliocentric model has this body in its center.
  6. 7. The name of the Greek astronomer that first created the geocentric model in 140 AD/CE.
  7. 9. the geocentric model has this body in its center.