entropy2057

entropy2057 t1_ixbqpdh wrote

>hlight. Not a chance. I flicked a lighter's sparker to flash a momentary light. Another one was riding a bicycle in a VERY dark spot in New Zealand wi

Your comment interested me so I did some googling. Looks like light doesn't actually refract all the way around the earth but the air of the atmosphere actually emits light through various physical processes (airglow). Zodiacal light is also a significant contribution.

https://en.wikipedia.org/wiki/Sky_brightness

The above article is about the apparent brightness of the sky itself and puts starlight at ~7% of the total contribution

The link below directly addresses illumination on the ground and puts starlight at about 1/5th of the total contribution. So away from the atmosphere it would be a lot dimmer for sure but still brighter than a cave~

https://www.cbc.ca/radio/quirks/what-are-the-relative-sources-of-light-on-a-moonless-night-1.6188393#:

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