Looking for strings inside inflation

Theorists from the Institute for Advanced Study have proposed a way forward in the quest to test string theory. Two theorists recently proposed a way to find evidence for an idea famous for being untestable: string theory. It involves looking for particles that were around 14 billion years ago, when a very tiny universe hit a growth spurt that used 15 billion times more energy than a collision in the Large Hadron Collider. Scientists can’t crank the LHC up that high, not even close. But they c...