Archive: https://archive.today/sS1ap From the post: >>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 witnessed, according to famed astronomer Edwin Hubble writing almost 900 years later, wasn’t a star at all but rather the explosive death of one. That dazzling supernova would later become the Crab Nebula, and the space telescope that bears Hubble’s name recently snapped an incredible picture of it a quarter century after the first image it took.