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View Full Version : Do some of the sunrays entering atmosphere go through and leave into space ?



skycentrism
2014-Jul-25, 02:39 PM
Do some of the sunrays entering atmosphere go through and leave into space on the other side without reaching Earth ?

Picture to illustrate what I mean:

http://www.meritnation.com/img/shared/discuss_editlive/2191102/2013_01_07_15_52_37/xkpvurpz8873075782537917829.png

Do some sunrays go through ?

:doh:

Shaula
2014-Jul-25, 02:43 PM
Yes, although there is of course a considerable atmospheric path length by this point and so scattering and absorption are fairly strong. If they didn't you could not get things like the sunrise/pre-dawn pictures from the ISS.

trinitree88
2014-Jul-25, 02:54 PM
Shaula. :
Yes, although there is of course a considerable atmospheric path length by this point and so scattering and absorption are fairly strong. If they didn't you could not get things like the sunrise/pre-dawn pictures from the ISS.

Shaula: Yep. SEE:http://www.bing.com/images/search?q=ISS+sunrise+pictures&FORM=HDRSC2#view=detail&id=B59D2BC11E3AFEE8C1EC35B8EFE416EF0942B245&selectedIndex=533

Hornblower
2014-Jul-25, 03:00 PM
Among other things, sunlight skimming through the atmosphere and back into space is refracted into the umbra and lights the Moon dimly during a total eclipse.

grapes
2014-Jul-25, 04:08 PM
Among other things, sunlight skimming through the atmosphere and back into space is refracted into the umbra and lights the Moon dimly during a total eclipse.
Producing the reddish ("blood" :) ) moon--it's as if the earth were ringed with a sunset.

Amber Robot
2014-Jul-25, 05:58 PM
I once worked with a group that had an experiment that flew on the Space Shuttle that pointed a spectrograph at the sun as the Shuttle went behind the Earth. As the line of sight went through lower and lower layers of the atmosphere, the experiment was able to probe the molecular abundances of trace species in the Earth's atmosphere as a function of height.

John Mendenhall
2014-Jul-25, 09:00 PM
I once worked with a group that had an experiment that flew on the Space Shuttle that pointed a spectrograph at the sun as the Shuttle went behind the Earth. As the line of sight went through lower and lower layers of the atmosphere, the experiment was able to probe the molecular abundances of trace species in the Earth's atmosphere as a function of height.

Nice. Then, sophisticated guesses about transiting exoplanets.