A NASA space probe to Pluto and the Kuiper Belt, launched in 2006 January. It flew past Pluto and its largest moon, Charon, in 2015 July, having gained a gravity assist from Jupiter in 2007 February. New Horizons photographed these bodies, analysed their surface compositions, and studied their atmospheres with the following instruments: the Long Range Reconnaissance Imager (LORRI), a high-resolution camera; Ralph, an instrument which combines the Multispectral Visible Imaging Camera (MVIC) and the Linear Etalon Imaging Spectral Array (LEISA, a near-infrared imaging spectrometer); Alice, an ultraviolet imaging spectrometer; REX, a radio-science experiment; the Solar Wind Analyzer around Pluto (SWAP); the Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI); and a student-built dust counter, SDC, which counts and measures the sizes of dust particles along the craft’s entire trajectory. After passing Pluto, New Horizons was put on course to fly past the Kuiper Belt object 2014 MU69 in 2019 January.
http://pluto.jhuapl.edu/ Official mission website.