Neptune, the eighth planet from the Sun, has a day length of approximately 16 hours and 6 minutes. It takes a lengthy 164 years to complete a single orbit around the Sun. The planet boasts a diverse collection of moons, including Naiad, Neso, Despina, Laomedeia, Halimede, Nereid, Thalassa, Triton, Larissa, Galatea, and Proteus.
it mostly consists of hydrogen and helium, with trace amounts of methane, water, ammonia and other ices. But unlike the other gas planets in the Solar System, Neptune's atmosphere has a larger proportion of the ices.
