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kayl_breinhar t1_jea12yv wrote on March 30, 2023 at 2:37 PM

Reply to comment by weizXR in The brightest gamma-ray in human history hit our planet this past Fall by PuzzleheadedOne1428

We can surmise that Earth has been meaningfully hit with GRBs over its history (even before ours) by taking ice and core samples and finding decaying isotopes that shouldn't be there.