Nuclear power would allow missions to orbit - not merely fly by The US space agency (Nasa) is progressing with ambitious plans to explore the Solar System using nuclear power. Their hope, eventually, is to use electricity generated by nuclear power to propel a space probe and power its instruments on a voyage to the icy moons of Jupiter, satellites that just possibly might harbour life beneath their ice. Before then, nuclear technology could be proved with a less ambitious mission, perhaps a nuclear-powered probe to the Moon. As long ago as 1907, just two years after Einstein discovered his...