A Lightweight Radioisotope Heater Unit is a device used by NASA that provides low levels of heat to spacecraft. It is different than a Radioisotope Pow.
See Juno's Greatest Images Of Jupiter As NASA's $1 Billion Mission Marks 10 Years In Space forbes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from forbes.com Daily Mail and Mail on Sunday newspapers.
In Photos: NASA's $1 Billion Juno Mission At Jupiter Marks 10 Years—See Its Greatest Images forbes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from forbes.com Daily Mail and Mail on Sunday newspapers.