Jupiter's newly formed Red Spot Jr. is increasing in strength, according to new observations from the Hubble Space Telescope. These latest measurements clock its windspeeds at 640 kph (400 mph); almost double the speeds recorded by the Voyager spacecraft when it observed one of the spot's parent storms in 1979. The increased windspeed probably dredged up deeper material from the planet, changing its colour from white to red, similar to the Great Red Spot.

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Why is the Red Spot red? Wiki didn't have the answer.

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In your rush to call everyone "entrenched" or closed-minded or "limited" you fail to note that the "limit" here has a very natural boundary: that point at which the evidence stops. - JayUtah

Science fiction was never meant to be an educational tool. - Editor Amazing Tales

Don't know what it is however I will guess at it being sulfur...

It is not known. Some phosphorus compounds are suspected.

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Science is a way of trying not to fool yourself. The first principle is that you must not fool yourself, and you are the easiest person to fool.
-- Richard Feynman

Why does't spectral analysis work to determine elemental/molecularal characteristic radiation?

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For those inclined to oppose human meddling with the structure of the universe or the composition and configuration of objects and groups of objects within the universe, consider:
Whether there is a limit to the magnitude of a modulation of chaos below which order remains invariant? Or, is order but a fiction invented by perspectives applied over finite, however large, time intervals?

The chemistry is probably some long chain polymers each with indistinct absorption spectra.

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Forming opinions as we speak

Long chain polymers? Carbon polymers, perhaps? With occasional sulfur and phosphorous atoms? Hmm - sounds like a recipe for simple life forms.

Necessary, but not sufficient...

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Forming opinions as we speak

I recall an old article quoting hydrogen phosphide as the culprit...Pete.

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A third rate theory forbids.
A second rate theory explains after the fact.
A first rate theory predicts.
A. Lomonosov

Sulfuric acid maybe??

Hmm - sounds like a recipe for simple life forms.

One of my old astronomy books (1970's) considered Jupiter to be a good place to look for life. I think that since then there has been a conclusion that the radiation would likely be too much for life to be sustained.

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Howling from the Shadows

It must be fun to lead a life completely unburdened by reality. --- JayUtah

You can't reason an irrational person out of an irrational belief. --- Noclevername

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