Neptune

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 282.4 Hz, 68 cents flat of D4, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap it to race the clouds around it.

Neptune is the eighth and farthest planet from the Sun, an ice giant of pale greenish blue, a little bluer than Uranus; the deep blue of older spacecraft pictures came from processing. It has the strongest winds in the solar system, faster than 2,000 kilometers an hour. It was the first planet found by math: astronomers worked out where it must be before they saw it in 1846.

Tap it and belts of white cloud race around it twice while a band with a dark storm drifts the other way. The spacecraft Voyager 2 saw a great dark storm like this when it flew past in 1989. Neptune takes about 165 years to go around the Sun once.

Made in Splashery. Its code is MIT.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.