Space10 mysteries of the universe: What came before the big bang? Searing bursts of radio waves first spotted a decade ago could come from bouncing black holes – and that suggests a universe might have existed before ours Features
SpacePushing the boundaries: A round-up of new popular science booksFrom the hunt for a theory of everything to the complex Rosetta mission, there’s treasure to be found in a trawl of some of the recent popular science writingCulture