New Horizons co-investigator John Spencer of the Southwest Research Institute (SwRI), Boulder, CO, right, speaks during a press conference prior to the flyby about the first images received from the New Horizons spacecraft of Ultima Thule that were captured on Dec. 30 as the spacecraft was 1.2 million miles away from Ultima Thule, Monday, Dec. 31, 2018 at Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Photo Credit: (NASA/Joel Kowsky)