Hubble Snaps a New Dazzling Photo of the Crab Nebula: It was formed by an explosion witnessed around the world almost a millennium ago Chinese astronomers noticed a star burning brightly in the daytime that persisted for three weeks, back in 1054 A.D.—and they weren’t alone. On the other side of the globe, Mayan stargazers recorded the same brilliant celestial phenomenon. What they ... [1621 chars]