Tiny Pluto sports big mountains, New Horizons finds

NASA Principal Investigator for New Horizons mission Alan Stern (C) is joined by Associate Administrator John Grunsfeld (L) and Mission Operations Manager Alice Bowman for a news conference as the spacecraft New Horizons approaches a flyby of Pluto, at NASA's Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, July 14, 2015. [Photo/Agencies]