Uranus smells like rotten eggs

The planet’s cloud tops contain hydrogen sulfide, the compound that gives bad eggs their stink

Uranus

TAKE A WHIFF  Uranus is a lovely robin’s egg blue in this image taken by the Voyager 2 spacecraft when it flew past in 1986. New measurements of the planet’s chemistry suggests it may smell like eggs, too — that is, really rotten eggs. 

JPL/NASA

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