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The Winter 2010 issue of The Earth Scientist includes a variety of educational resources, ranging from astronomy to glaciers. Check out the other publications and classroom materials in our online store.

Big, Bigger, Biggest


Although the Sun looks small from Earth, it is really much, much bigger than our planet (and any other planet in the solar system). The Earth is actually one of the smaller planets compared to the giant planets in the outer solar system - Jupiter, Saturn, Uranus, and Neptune. The table below lists the diameters of the planets and the Sun compared to the Earth.


Body Diameter
(Earth = 1)
Sun 109
Mercury .38
Venus .95
Earth 1
Mars .53
Jupiter 11.19
Saturn 9.40
Uranus 4.04
Neptune 3.88
Pluto .18



Last modified January 5, 2004 by Lisa Gardiner.

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The Summer 2010 issue of The Earth Scientist, available in our online store, includes articles on rivers and snow, classroom planetariums, satellites and oceanography, hands-on astronomy, and global warming.

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