New Horizons cost per fiscal year. New Horizons began formulation in fiscal year 2002 and implementation (build) phase the following year. After launch in January 2006 the project began its prime mission, which carried it through the Pluto encounter in 2015 and subsequent years to ensure full downlink of all data. Extended mission operations began in 2017. Source: Planetary Science Budget Dataset, compiled by Casey Dreier for The Planetary Society (accessible on Google Sheets or downloadable as an Excel file).