STOCKHOLM – This year marks the centenary of Albert Einstein's general theory of relativity, his masterwork describing gravity as the curvature of space and time. Yet, as is often true in science, Einstein's insights have provided physicists with as many questions as they have answered.
斯托克霍姆—今年是爱因斯坦广义相对论诞生一百周年。这个伟大理论把引力描述为空间和时间的弯曲。但是，科学界总是发现，爱因斯坦的洞见给物理学家带来的问题与答案一样多。