Today was a big day for little Pluto.
NASA’s New Horizon spacecraft made several flybys of the demoted, diminutive non-planet on Tuesday morning, resulting in some pretty exquisite photos and a big accomplishment for the United States.
Hello #Pluto! We’re at closest approach. Congrats to all! Follow our story & view new images using #PlutoFlyby. pic.twitter.com/8JVlJrcUkY
— NASA New Horizons (@NASANewHorizons) July 14, 2015
This exploration of Pluto means that the United States has officially visited every planet in our solar system.