Neptune: – THE WINDY PLANET
Neptune is not observable by naked eye. lt was discovered in 1846 but the existence ofthe eighth planet had been previously conjectured by observing the perturbation of Uranus around the Sun.
Our knowledge about Neptune are quite limited. lt is a little smaller than Uranus and it is surrounded by a system of rings. lt has the
characteristic of rotating around the Sun with the axle almost perpendicular to the plane ofthe orbit.
In the atmosphere are present hydrogen, helium and methane and we can observe a band structure simile to Jupiter’s. The blue color ofthe planet is due to the presence of methane in the atmosphere.
Violent storms, long chains of clouds and cyclones have been observed, in addition to a ten of satellites, the biggest is Triton.