With reference to radioisotope thermoelectric generators (RTGs), consider the following statements: 1. RTGs are miniature fission reactors. 2. RTGs are used for powering the onboard systems of spacecrafts. 3. RTGs can use Plutonium-238, which is a by-prod
RTGs are not fission reactors; they use radioactive decay to produce electricity. They are indeed used in spacecraft for power, and Plutonium-238 is commonly used, which is a by-product of nuclear reactors, not weapons.