Post History
Anywhere from ancient times to the present. Question 1: Is there anything there? (answered pretty quickly) Sunspots, for instance, were first observed by the Chinese in 364 B.C., two millenia bef...
Answer
#1: Attribution notice removed
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System
·
2020-06-01T14:13:54Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/102534 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/