Airglow
...when there is so much UV radiation absorbed by air during the day the ozone in the upper atmosphere glows as it goes back to its background energy state.
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- kelley b.
- "There is only one thing for it then--to learn. Learn why the world wags and what wags it. That is the only thing which the mind can never exhaust, never alienate, never be tortured by, never fear or distrust, and never dream of regretting..."
-T.H. White, The Once and Future King
No Hell below us, above us only sky... -John Lennon, Imagine
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