* Astronomy

The Ch'ing-yang event of 1490 (also Ch'ing-yang, Chi-ing-yang or Chíing-yang meteor shower) is a presumed meteor shower in the Qìngyáng (Ch'ing-Yang, simplified Chinese) district of the then-Chinese province of Shaanxi (now part of Gansu Province), in March or April 1490 CE, with one source dating the event to April 4, 1490. If a meteor shower did occur, it may have been the result of the disintegration of an asteroid during an atmospheric entry air burst.
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See also Mahuika crater