talk about size and scale of the the solar system, galaxy and Universe, but does this really mean? What are some ways you have tried to understand this and make connections?
Added by Emily B.
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It is vast, with the sun at the center and the planets orbiting around it. The size of the solar system is measured in astronomical units (AU), which is the distance between the Earth and the sun. The average distance between the Earth and the sun is about 93 Show more…
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