How much Plutonium-238 is on the Curiosity Rover?

http://www.space.com/13709-plutonium-shortage-nasa-planetary-science-future.html Curiosity, also known as the Mars Science Laboratory, is carrying almost 8 pounds (3.6 kilograms) of the radioactive fuel. read more

So it turned to Russia. The first shipment from the Russian plant arrived in the 1990s, and to date, NASA has received about 70 to 90 pounds of plutonium. A few pounds of Stalin's finest plutonium-238 hitched a ride to Mars on the back of Curiosity. read more

Pu-238, although highly toxic, is not used in nuclear bombs as is Plutonium-239. RTGs have powered NASA spacecraft for many decades, among them two Voyager probes, the Cassini spacecraft, and Curiosity rover. The last time the U.S. produced plutonium-238 was in 1988. read more