NASA’s New Horizons spacecraft, launched in 2006 with a primary mission to perform the first-ever flyby of Pluto, has provided researchers with invaluable information about the dwarf planet. Now, the space probe has made more history with its January 1, 2019 flyby of distant world 2014 MU69. The close rendezvous with the icy rock, located four billion miles from Earth in the Kuiper Belt, is not only humanity’s furthest encounter with a distant object, but also the most primitive one ever visited by a spacecraft.