Nuclear Technology Makes Deep Space Travel Possible
How do you provide power to spacecraft in the deep reaches of space far from the sun? For the past 50 years the United States has been using radioisotope thermal generators (RTG). Deep space missions using RTGs (including the Voyager Spacecraft that was launched in 1977) are currently still transmitting data from distances far beyond Pluto. More recently, the New Horizon's spacecraft was launched in 2006 has just flown by Pluto offering the first images of the dwarf planet close up. RTGs were used on the moon during the Apollo mission with astronauts, the Curiosity rover, the Viking Mars Landers, and more. The United states has launched about 30 spacecraft and landers that have used RTGs for electricity and heat.