the-actual-universe: Astronomical UnitsCentimetres and metres just don’t cut it when referring to astronomical scales. For studies of our Solar System, a more useful unit is the Astronomical Unit (au or AU). This is defined as the average distance

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the-actual-universe: Astronomical UnitsCentimetres and metres just don’t cut it when referring to astronomical scales. For studies of our Solar System, a more useful unit is the Astronomical Unit (au or AU). This is defined as the average distance

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