n the pre-dawn hours of a late October day, a satellite and an airplane joined forces over the frigid Weddell Sea, taking simultaneous measurements of drifting sea ice. It was the culmination of more than a decade of planning, designing and building the best way to measure Earth’s changing ice.

NASA Explorers are constantly pushing the limit to learn more about our world and those far beyond. Join in as they celebrate a milestone in the quest to better understand the planet we call home.