Ionosphere
From Wikipedia, the free encyclopedia
The ionosphere is a portion of the upper atmosphere, between the thermosphere and the exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth...
I guess that's why last night and this morning I could pick up 1160 AM KSL from Salt Lake City Utah, here in good ol' Salem Oregon, on my boombox in my sewing room! :)
You go, ionosphere!
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