List of 10 Short Facts About Neptune

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Neptune is the eighth planet from the sun and one of the most interesting overall. Get a list of 10 short facts about Neptune with help from an astrophysics professional in this free video clip.

Part of the Video Series: Moons & Planets
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Hi, my name is Eylene Pirez, and I'm an astrophysicist and this is a list of 10 short facts about Neptune. So, the first one is that it's the furthest one from the sun, it's the eighth planet. The second one is that for being a gas giant, it's the smallest of the gas giants and it only has a radius of 25,000 kilometers. Then, the third one is that the surface gravity is actually the planet with the closest surface gravity from Earth. And, the surface gravity depends on mass, and depends also on the radius of the star. And, because Neptune is so massive, but is also so much bigger, this balances out and the actual surface gravity is 17 percent that of Earth's. So, similar G-force. The fourth thing is that it has very, very high winds, 2,000 miles per hour winds. Another short fact is that it is the coldest, and it gets to minus 23 degrees Celsius. And, then, another one, is that one year on Neptune, meaning that the time that it takes to orbit the sun is 165 Earth years, is equal to one year on Neptune. Now, the next one is that the length of a day is actually very different, depending where you are on the planet, because Neptune is a gas giant, it doesn't mean that every layer is rotating at the same speed. So, if you were in the equator, a day is 18 hours. So, an equator day is 18 hours, and if you're at the pole, the pole's are spinning a lot faster, so a pole day is 12 hours. Now, the next thing that is important is that the blue color. And, this has to do with the abundance of methane in the atmosphere. Another important thing is that this can actually cause for Neptune to have diamond rains, and the reason that you get diamonds is lightning, the affect of lightning and the amount of carbon found in methane, can actually make diamonds and they will fall from the atmosphere to the surface of Neptune. And, then, the next one is that despite the fact that the rings are quite small, Neptune does, in fact, have four rings. So, it has a ring system. And, these are 10 short facts about Neptune. My name is Eylene Pirez, and I'm an astrophysicist.

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