Scientists Use Warped Light to Test Einstein's Theory and Weigh Stars

When Einstein developed his general theory of relativity, commercial radio didn't even exist yet. He could not possibly have imagined all of the fancy, high-tech equipment that scientists would use over the next 100 years to test--and verify--his predictions. In fact, he wasn't even sure that all of his predictions could be tested experimentally because they resulted in such tiny, hard-to-measure effects.Just last week, an international team of researchers confirmed one of Einstein's predictions...