Solar System Math - NASA

between the center of the Earth and the center of the Sun. The rest of the solar system ranges between 0.4 AU (from Mercury to the Sun) to 39.3 AU (from Pluto to the Sun). When leaving the solar system and looking at other star systems, the AU is too small for scientistsÕ needs. So they created a LARGER unit of measurement. Scientists measure a ................
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