SpacePossible exomoon may be an ocean-covered world as big as Saturn The exomoon candidate found in July is a real oddity – early calculations suggest it’s huge and doesn’t fit any moon formation processes we currently know News
TechnologyThe blushing Englishman who stole nuclear secrets from the USWilliam Penney planned the Nagasaki bomb as part of the Manhattan Project, and kept the UK in the nuclear race. But was he a master of bluffing or a master spy?Features