US Nobel winner's 25-year odyssey to black hole at center of galaxy
Washington (AFP) - For US astronomer Andrea Ghez, who won this year's Nobel Physics Prize, what makes black holes so fascinating is how tricky they are to conceptualize.If she's asked to explain them to an average person, her standard answer is: "A black hole is an object whose pull of gravity is so intense that nothing can escape it -- not even light."That doesn't always satisfy people's curiosity."Very few people understand what a black hole is -- but I think so many people are fascinated by them," the professor at the University of California, Los Angeles told AFP by phone after she was co-...