Uranus Smells Like Rotten Eggs

Space.com ^ | April 23, 2018 11:00am ET | Mike Wall,

[BenLurkin]

Researchers have long wondered about the composition of the clouds high up in Uranus' sky — specifically, whether they're dominated by ammonia ice, as at Jupiter and Saturn, or by hydrogen sulfide ice. The answer has proved elusive, because it's tough to make observations with the required detail on distant Uranus. (Not only are Jupiter and Saturn closer to Earth, they have also hosted dedicated orbiter missions. Uranus has been visited just once — a brief flyby by NASA's Voyager 2 probe in January 1986.)

Irwin and his colleagues studied Uranus' air using the Near-Infrared Integral Field Spectrometer (NIFS), an instrument on the 26-foot (8 meters) Gemini North telescope in Hawaii. NIFS scrutinized sunlight reflected from the atmosphere just above Uranus' cloud tops — and spotted the signature of hydrogen sulfide.

"Only a tiny amount remains above the clouds as a saturated vapor," study co-author Leigh Fletcher, from the University of Leicester in England, said in the same statement. "And this is why it is so challenging to capture the signatures of ammonia and hydrogen sulfide above cloud decks of Uranus. The superior capabilities of Gemini finally gave us that lucky break."

Neptune's clouds are likely similar to those of Uranus, the researchers said. The big difference between the clouds of these two "ice giants" and those of Jupiter and Saturn probably trace to the worlds' formation environments: Uranus and Neptune coalesced much farther from the sun than the two gas giants did.

[SunkenCiv]

I swear, it's just something I ate.

Thanks fieldmarshaldj.

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[mowowie]

LoL

Still, that is one place i really wold not like to visit...

[Tolerance Sucks Rocks]

True: Uranus’s crap really DOES stink!

DANG!