Powering spacecraft with solar energy may not seem like a challenge, given how intense the sun's light can feel on Earth.

Since the first nuclear explosion in history during the Trinity test in 1945, nuclear weapons have significantly shaped the ...

Most RTGs are built using plutonium-238 as their source of energy, which is not usable for nuclear power plants since it does not sustain fission reactions. Instead, plutonium-238 is an unstable ...