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Phenomena > Planets > Planet Images Image Gallery

Planet Images

Visible Planets | Planets and Stars | Observing Planetary Movement

Image of solar system
One of the great mysteries about the ancients is how they were aware of the exsistance of Uranus, Neptune, and Pluto. The Aztecs built pyramids for these planets, but they cannot be seen without a telescope. How do you think the Aztecs knew about these planets?

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© 2002 eCUIP, The Digital Library Project, Chicago, IL. Image created in part with satellite photos from NASA. Reproduction or distribution is prohibited without permission.

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