Simple Online Photographic Dictionary

a visual dictionary that can be used as a children's picture dictionary,
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Neptune


Neptune is the eighth planet from the sun. It was discovered by mathematical predictions, not with a telescope. Neptune has 13 moons; the largest is called Triton.

Neptune is 4,498,252,900km from the Sun.
Its radius is 24,764km.

Image sourced from NASA/JPL-Caltech