The Solar System

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The Solar System
  1. Observing objects in space
    1. Luminous objects in space give out visible light
      1. These visible light waves allow people to study different objects
      2. Many objects don't give out visible light
        1. They emit radio waves and microwaves
          1. Different types of telescopes are used to detect the different waves
            1. Scientists use this data to make conclusions about the Universe
      3. Solar System models
        1. Geocentric model
          1. Ptolemy's geocentric model
            1. Planets moved in small circles as they orbited the Earth
          2. Heliocentric model
            1. Copernicus's heliocentric model
              1. A model with the Sun at the centre of the Solar System
          3. Telescopes
            1. With the invention of the telescope, it allowed scientists to see objects in space in much greater detail
              1. Galileo discovered four of Jupiter's moons using a telescope
                1. By plotting the movements he showed that not everything orbited the Earth
                  1. This and other observations supported Copernicus's idea
                    1. Supported the heliocentric model
                2. As telescopes improved more discoveries were made
                  1. Like the planets Uranus and Neptune and the dwarf planet Pluto
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