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Light that is so blue humans cannot see it. A band of the electromagnetic spectrum between the visible and the X-ray. Photons of ultraviolet light are more energetic than photons of visible light.


The dark central region of a sunspot.


Dunes (literally 'waves').

Uranus is the seventh planet from the sun. It is the third largest planet in our solar system. Uranus is named for the Roman god who is father of the Titans.
HREF="../planets/profile.cfm?Object=Uranus">More on Uranus >>

Uranus and moons Miranda and Ariel
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Last Updated: 25 Oct 2013