During the Cold War, the United States and Soviet Union often tested nuclear weapons by simply detonating them in remote places and taking notes. Numerous islands were obliterated in the process, most ...

A satellite no bigger than a shoebox could one day help enforce one of the world's most important space treaties by detecting hidden nuclear weapons orbiting Earth. Scientists, in a new study, have ...

Interplanetary travel to Mars aboard nuclear-powered spaceships may sound like science fiction – yet NASA is planning to make it a reality. The Space Reactor-1 Freedom mission is scheduled for launch ...

The proliferation of nuclear power in space got a little more real Tuesday with the launch of a small satellite developed by a Florida-based company specializing in nuclear micro-power technology.