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This Many Years Ago
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972 years ago, on the 10th of July 1054, Chinese Song dynasty, Arab and possibly Amerindian observers witnessed the SN 1054 supernova. It could be seen for several months and it’s remnants are now the Crab Nebula. Chaco Canyon petroglyphs in New Mexico may represent SN 1054. #otd #history 🗃️
2026-07-10T05:00:02.864Z