Germany hopes to put an unmanned space craft into the moon's orbit in the early part of the next decade.
A senior Iranian official warned that military strikes against Iran's nuclear sites would not destroy the Islamic republic's uranium enrichment activities, which could be easily moved and restarted.
Stockpiles of weapon-grade plutonium and uranium are growing around the world, despite efforts to curtail the proliferation of nuclear materials.
International nuclear experts are quietly confronting the most terrifying scenario of all -- what to do if terrorists manage to build and detonate a nuclear fission bomb.