I wondered too what Webb was referring to, and didn't find a hint of it either. "The known history of supernova observation goes back to 1006 CE. All earlier p

I wondered too what Webb was referring to, and didn't find a hint of it either. "The known history of supernova observation goes back to 1006 CE. All earlier proposals for supernova observations are speculations with many alternatives. " -- https://en.wikipedia.org/wiki/History_of_supernova_observation https://en.wikipedia.org/wiki/History_of_supernova_observati... There's a rock drawing in Kashmir, India of what might be a supernova (HB9) dating to -4600BCE ... https://www.theguardian.com/world/2018/jan/10/two-suns-no-its-a-supernova-drawn-6000-years-ago-say-indian-scientists https://www.theguardian.com/world/2018/jan/10/two-suns-no-it...