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[–] 2 points 3 months ago (1 child)

I don't know science as well as I wish, but the distance may be the inverse square law in action.

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  • [–] 1 point 3 months ago

    I think that's at least part of it, if I remember correctly. I think there's also something in the fact that it was passing through air, which may partially absorb radiation...? But I'm not sure about that one.

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