The diameters of the planets in the solar system can be expressed in astronomical units (AU), where 1 AU is the average distance from the Earth to the Sun, approximately 149.6 million kilometers. The diameters of the planets vary significantly: Mercury is about 0.0004 AU, Venus is approximately 0.00095 AU, Earth is around 0.0001 AU, Mars is about 0.00053 AU, Jupiter is roughly 0.0014 AU, Saturn is about 0.0012 AU, Uranus is around 0.0005 AU, and Neptune is approximately 0.00049 AU. These values illustrate the vast differences in size among the planets in our solar system.
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