Ep 16. Neptune: Windy with the Wildest Moon

Neptune is the coldest, stormiest planet, and the only one that cannot be seen with the naked eye from Earth. Its moon, Triton, is the only spherical moon in the solar system that's an irregular satellite that orbits opposite the direction of all the planets. Learn how tidal forces are not only changing that orbit, but also causing geologic activity on a surface that contains organic compounds.