SpaceWe live in a cosmic void so empty that it breaks the laws of cosmology Mounting evidence suggests our galaxy sits at the centre of an expanse of nothingness 2 billion light years wide. If so, we may have to rethink our understanding of the universe Features
PhysicsMost accurate clock ever can tick for 40 billion years without error The record for the most accurate clock has been broken in an experiment with strontium atoms almost as cold as absolute zero, and it is twice as accurate as any predecessor News