New Horizons project scientist Hal Weaver of the Johns Hopkins University Applied Physics Laboratory speaks about new data received from the New Horizons spacecraft during a press conference after the team received confirmation from the New Horizons spacecraft that it has completed the flyby of Ultima Thule, Tuesday, Jan. 1, 2019 at Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Photo Credit: (NASA/Joel Kowsky)