Your link didn't work on my computer. But distance has to be known, before the decay observed takes on meaning. No?
No, it doesn't. Why would it?
Here is the .pdf
http://articles.adsabs.harvard.edu/..._paper=YES&type=PRINTER&filetype=.pdf
Distance and size depend on time being the same all the way. Parallax uses time as you know. To get 2 sides of the triangle, time is intricately woven in.
Time was shown to be the same at Supernova 1987a as shown by the decay of cobalt which exactly matched that seen on Earth. This was derived independently of any distance measurement. It demonstrated that the laws governing the four fundamental forces and time were the same at Supernova 1987a.
If SN1987a were for example, only 2 light years away, do you think the calculations would be accurate for decay, and the other claims?
Yes. The measurement of cobalt is independent of distance.
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