Home Science Physics New Horizons first probe to reach pluto! ScienceAstronomyPhysics New Horizons first probe to reach pluto! The New Horizons probe reached its closest approach to Pluto on July 14, 2015 at 7:49 EST. We have received more and more detailed images and data about the dwarf planet and its largest moon, Charon. Very exciting times! By Watch and Study - Mar 18, 2016 277 RELATED ARTICLESMORE FROM AUTHOR Physics What’s the difference between a solar and lunar eclipse? Astronomy Football Disease, Moon Base Dreams, and the Deepest Vents Ever! Astronomy The Oort Cloud: Astronomy #22 Astronomy Comets: Astronomy #21 Astronomy Asteroids Tell us what you think!