Workers install the radioisotope thermoelectric generator RTG onto the New Horizons spacecraft for a fit check.

In NASA Kennedy Space Center’s Payload Hazardous Servicing Facility, In NASA Kennedy Space Center’s Payload Hazardous Servicing Facility, workers install the radioisotope thermoelectric generator (RTG) onto the New Horizons spacecraft for a fit check. The RTG is the baseline power supply for New Horizons, scheduled to launch in January 2006 on a journey to Pluto and its moon, Charon. It is expected to reach Pluto in July 2015.