Neptune is the eighth planet from the sun in our solar system.
This ice giant has a hazy atmosphere and strong winds. It is
orbited by eight moons and narrow, faint rings arranged in
clumps. Neptune's blue color is caused by the methane (CH4)
in its atmosphere; this molecule absorbs red light.
Neptune cannot be seen using the eyes alone. Neptune was
the first planet whose existence was predicted mathematically
the planet Uranus's orbit was perturbed by an unknown object
which turned our to be another gas giant, Neptune.