On Neptune it rains diamonds!
Scientists at University of California Berkley say Neptune’s atmosphere comprises of 15% methane which has the same element, carbon. The temperature is very hot but not over 3,820 Kelvin (6,416°F), the melting point of diamonds. Also the pressure is high enough. This means that theoreticaly it rains diamonds.
Voyager 2 traveled at 42,000 miles per hour for 12 years to reach Neptune. It is the only space craft to have visited Neptune.
I would not live on Neptune because I would die of hypothermia or frostbite. Also, breathing in methane would lead to instant death. No other planet besides Earth can sustain life, so I think I'll stay here.
“The planet takes almost 165 Earth years to orbit our sun.” (NASA). That is 60,225 earth days. The orbit is 2,795,173,960 miles long.
Scientists discovered Neptune using math before they ever saw it. John Couch Adams of Britain and Urbain Jean Joseph Leverrier of France, drew the conclusion the gravity from another planet beyond Uranus was changing its orbit. They figured out where planet was, but also how big it was. An astronomer, Johann Gottfried Galle, decided to search for this planet and in 1846 saw Neptune for the first time.
Neptune is approximately 154,704 kilometers in circumference. (96,129 miles)
“Neptune is the last of the hydrogen and helium gas giants in our solar system. It is more than 30 times as far from the sun as Earth.”(NASA).