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Re:A meteorite hit the moon during yesterday's total lunar e... by czbond on Tuesday January 22, 2019 @11:17PM (#18975639)
I needed some more details of how the photon experiences time, and found this (first good google result). But useful.

https://medium.com/starts-with-a-bang/ask-ethan-109-how-do-p...

Re:A meteorite hit the moon during yesterday's total lunar e... by bookofjoe on Wednesday January 23, 2019 @09:46AM (#18978500)
"If time travel is possible, then there is no such thing as time."— Kurt Gödel