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Sure, Uranus is big… but how big is it? There are so many ways we can measure the size of Uranus, so let’s look at all of them.

First, let’s take a look at diameter. The diameter of Uranus is 51,118 km across. For comparison, this is about 4 times bigger than Earth.

Now, let’s look at volume. The total volume of Uranus is 6.833×10^{13} km^{3}. Again, for comparison, you could fit 63 Earths inside Uranus, and still have room to spare.

Next, mass. The mass of Uranus is 8.68×10^{25} kg. This is about 14.5 times more massive than Earth. This sounds like a lot, but this makes Uranus the smallest of the outer planets, smaller even than Neptune.

How about surface area? The surface area of Uranus is 8.1×10^{9} km^{2}. This would let you flatten out almost 16 Earths to cover the surface area of Uranus.

How big are the other planets? Here’s how big Jupiter and Saturn are.

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I still don’t know how big it is…