Uranus smells like rotten eggs
The planet’s cloud tops contain hydrogen sulfide, the compound that gives bad eggs their stink
![Uranus](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/04/042018_LG_stinky-uranus_feat.jpg?fit=860%2C460&ssl=1)
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