Ultraprecise clock helps cut relativity down to size
Friday, September 24, 2010 - 17:28
in Astronomy & Space
Scientists show that Einstein's famous theory works at a down-to-Earth scale.Among the oft-repeated predictions of Albert Einstein's famous theory of relativity is that if a twin travels through the cosmos on a high-speed rocket, when he returns to Earth he will be noticeably younger than the twin who stayed home.