Pluto’s famous heart-shaped structure, called Tombaugh Regio, instantly became famous after NASA’s New Horizons mission caught footage of the dwarf planet in 2015. Now, new research shows Pluto’s renowned nitrogen heart rules its atmospheric circulation.  Using the data from NASA’s New Horizons, researchers revealed that most of the action comes from the heart’s left lobe, Sputnik Planitia. This exotic ice evaporates during the day and condenses into ice again at night, causing nitrogen winds to blow. Such findings can help researchers to pinpoint both similar and distinctive features between Earth and a dwarf planet billions of miles away.