Neptune

Facts about Neptune..

-Neptune is about 17 times the mass of Earth. It is the smallest of the gas giant, or the fourth largest planet in our solar system with a radius of 15,299.

-The surface temperature of Neptune is -353 degrees fahrenheit.

-Among the gas giants, Neptune is the most dense and its gravity is 11.15 m/s.

-The surface gravity of Neptune is 1.14 times the gravity on Earth if you compared the two. Neptune is a gas giant and actually has no solid surface.

-Gas giants are further away from the sun, so it takes them longer to orbit it. This takes about 164.79 years for Neptune.

-For this planet to rotate once on its axis, it would take 15 hours, 57 minutes, and 59 seconds.

-The weather on Neptune is probably about the craziest among the whole solar system. Neptune has high winds and fierce storms with various dark spots that come and go as they please in its atmosphere.

-Neptune has as many as 13 moons on its planet, with one named Triton which is as big as the dwarf planet Pluto. Neptune has 6 rings, each named after an astronomer who made an important discovery regarding Neptune.

-Neptune is composed of the gases Helium, which makes up 19%, Hydrogen, which has the highest percentile at 80%, and lastly Methane at 1.5%.

-On September 23rd, 1846, Neptune was discovered by Urbain La Verrier.

-The name "Neptune" comes from the Roman God Neptune, who was the God of the sea.

-Actually, Neptune and Uranus are the only two planets in our solar system that aren't easily seen without a telescope of some sort. However, they can't be seen from earth, at least, according to www.space.com/23194-.

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Fun Facts about Neptune

  • Only one spacecraft has flown by Neptune:
    In 1989, the Voyager 2 spacecraft flew past the planet. It returned the first close-up images of the Neptune system. The NASA Hubble Space Telescope has also studied this planet.
  • One of Neptune's most fascinating moons is call Trition. Astronomers find this moon fascinating because of it orbits Neptune in the opposite direction of its own rotation on its axis, and is the only major moon in the solar system to do this.