Models of the solar system

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Across
  1. 2. This is a physical or mathematical representation of a scientific idea or concept.
  2. 5. This early scientist believed the Earth was at the centre of the solar system, but suggested the planets revolved around a point outside Earth.
  3. 7. This astronomer was one of the first to use a telescope to observe the solar system. His observations provided evidence that supported the heliocentric model.
  4. 8. This model put Earth at the centre of the solar system
  5. 9. A star, such as our sun, and all the objects that orbit it.
Down
  1. 1. This model put the Sun at the centre of the solar system
  2. 3. This Ancient Greek philosopher argued in favour of the geocentric model.
  3. 4. This Polish astronomer used mathematics to explain the motion of the objects in the heavens, with the Sun at the centre.
  4. 6. These are facts or observations that can be used to support or oppose a theory.
  5. 10. This is the curved, repeating path an object takes as it revolves around an object such as the Sun due to gravity.