Standing in a hallway decorated with images of planets and other space objects, John Spencer is looking at a high resolution photo of Pluto hanging in front of him. It’s striking, a mostly gray sphere with dark maroon and golden hues. Spencer, a planetary scientist with the Southwest Research Institute’s who works out of their Boulder office, points out features.
"The North Pole is up here. This area up here is a vast plain of frozen nitrogen."
It’s hard to believe, but until July 2015, scientists like Spencer had almost no idea what Pluto looked like. That’s when the New Horizons spacecraft zoomed by the dwarf planet, capturing images and data that led to a vast reimagining of Pluto. Now, he and others are sharing what they’ve learned.