Astronomy
Pluto's Surface Geology from New Horizons Data
Quick fact
New Horizons revealed that Pluto's surface is geologically active, with a vast heart-shaped nitrogen ice plain called Sputnik Planitia that shows no impact craters, meaning it is being resurfaced even today.
Why this is interesting
You know Pluto as a cold, distant speck—but when we finally got a close look, it was covered in glaciers, mountains, and flowing ice. How can such a small, icy world look so alive?