Neptune's name comes from the greek god Poseidon
The Voyager 2 spacecraft, which has been in operation since 1977 and is the only spacecraft to have ever visited Uranus and Neptune, is currently making its way to interstellar space, where its twin spacecraft, Voyager 1, has resided since August 2012.
:Neptune's mass is 102,000,000,000,000,000,000,000,000 kg, it is 17 times bigger than earths total mass
:The radius at the poles is 15,125 miles, slightly smaller than the equatorial radius of 15,388 miles. The average diameter across the planet is 30,598 miles, almost four times the diameter of Earth. A trip around Neptune's equator would cover 96,129 miles.
It takes neptune 15 hours, 57 minutes to rotate
Triton is the largest natural satellite of the planet Neptune. It was discovered on October 10, 1846, by English astronomer William Lassell.
Proteus, also known as Neptune VIII, is the second largest Neptunian moon, and Neptune's largest inner satellite. Discovered by Voyager 2 spacecraft in 1989
Laomedeia, also known as Neptune XII, is a prograde irregular satellite of Neptune. It was discovered by Matthew J. Holman, et al. on August 13, 2002.
Halimede is a retrograde irregular satellite of Neptune. It was discovered by Matthew J. Holman et al. August 14, 2002.
I choose this planet beacuse its namesake poseidon is my favorite greek gods.
don't make us present these
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Public - 9/28/16, 7:29 PM