This illustration shows the approximate sizes of the planets relative to each other. Outward from the sun, the planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, followed by the dwarf planet Pluto. Jupiter's diameter is about 11 times that of the Earth's and the sun's diameter is about 10 times Jupiter's. Pluto's diameter is slightly less than one-fifth of Earth's. The planets are not shown at the appropriate distance from the sun.

Illustration courtesy Lunar and Planetary Institute

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Best For
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Best For
6-8

Subjects
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Students use metric measurement, including astronomical units (AU), to investigate the relative size and distance of the planets in our solar system. Then they use scale to model relative distance.