> Other problems .. > "A large fraction of such astronomical gamma rays are screened by Earth's atmosphere." https://en.wikipedia.org/wiki/Gamma_ray#Sources All done by satellite these days
And don't leave out neutrino telescopes <https://www.space.com/24334-neutrino-telescopes-astronomy-new-era.html> Be mindful of Z-order, I think Homestead was a mile underground. Michael
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