A "guest star" was seen by the Chinese in 1054. The supernova explosion was witnessed in the area of Earth's sky where today we see an expanding gas cloud that we call Crab Nebula. The "guest star" was so bright it was visible in daylight.
The most dramatic supernova was observed in the year 1006 AD. It appeared in May as a brilliant point of light visible during the day. It was bright enough to cast shadows on the ground during the night. Because astronomers have never seen this be4 it was refered to as a ?guest star?.
dark, usually irregularly shaped spots on the sun's surface that are actually solar magnetic storms. The Chinese recorded dark features on the sun seen with