Triton is the largest satellite/moon of the planet Neptune and was discovered by British astronomer William Lassell on October 10, 1846.
![Triton - NASA](http://secretsofspace.com/wp-content/uploads/2014/04/triton.jpg)
Voyager 2 took this close up image of satellite Triton during a close flyby on August 25, 1989. This composite image was constructed using about a dozen pictures and the colour correction was added to the lower resolution images. Triton is relatively flat with some outcrops, ridges, plateaus, icy plains and a few craters. The large south polar cap at the bottom of the image is highly reflective and slightly pink in color; it is believed that it may consist of a slowly evaporating layer of nitrogen ice deposited during the previous winter.
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