What Is the Volume of Neptune?

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Neptune has 17 times the mass of the Earth. Find out more about the volume of Neptune with help from an experienced education professional in this free video clip.

Part of the Video Series: About Astrophysics & Outer Space
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Hi, my name is Eylene Pirez, and I'm an astrophysicist and this is what is the volume of Neptune.So Neptune has 17 times the mass of the Earth. It's fairly massive and it has a radius so here's the radius of 24,622 kilometers. Now how do we calculate the volume of a planet? Assuming that it's spherical, we can use the equation 4/3 PIR cubed and if you plug in the radius in the equation for the volume, we get that this is about 6.3 times 10 to the 13 kilometers which is about 57 times the volume of the Earth. So that is the volume of Neptune, 6.3 times 10 to the 13th kilometer cubed. My name is Eylene Pirez and I'm an astrophysicist and this is the volume of Neptune.

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