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by cozzyd 1703 days ago
Indeed ultra high energy photons "decay" by interacting with the CMB.
1 comments
ben_w 1703 days ago
Using the word “decay” to include that feels like it can’t be right.

But I’m not a proper physicist, just an amateur.

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cozzyd 1702 days ago
Yeah, you're right, it's not the right word at all!
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ben_w 1702 days ago
Good to know — I was worried I might have stuck my foot in my mouth when I looked at your profile and saw your profession.
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