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The sunlight reflected from the earth's surface that illuminates part of the moon not directly lighted by the sun. Also called earthlight.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈɜːθˌʃaɪn) or


(Astronomy) the ashen light reflected from the earth, which illuminates the new moon when it is not receiving light directly from the sun
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



the faint illumination of the part of the moon not illuminated by sunlight, as during a crescent phase, caused by the reflection of light from the earth.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
clair de Terre
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Additionally, viewers should keep their eyes open for ( earthshine  as it will illuminate the darkened portion of the young moon tonight.
In this case, the flare is due to the very bright Earthshine. Close passes by Venus and Mercury may occasionally create similar patterns in the future, but these are limited cases and do not affect the science operations of the instrument, NASA said.
During a sunlight Earth can illuminate the Moon's surface being lit phenomenon 'Earthshine' Capturing images like these has become much easier since the opening of the new building, the Gillian Dickinson Astroimaging Academy.
For a couple of nights after the new moon, it's also possible to see Earthshine on the surface of the moon.
Alson Wong An high-dynamic-range (HDR) composite reveals exquisite detail in the corona's complex array of streamers and the Moon's face aglow with earthshine. Nikon D7500, ISO 100 and 200, Borg 77-mm apo refractor, f/6.5, 1/1,000 to 2 seconds.
Aircraft radiations are composed of aircraft plume radiation, aircraft hot parts radiation, skin radiation, reflected sunshine radiation, reflected earthshine radiation, and reflected skyshine radiation [14].
You once again have an opportunity to see a very thin crescent Moon with Earthshine in a dark sky.
The nighttime copolar Mie-channel performance of ATLID should be similar to the 532-nm CALIOP channel, but better daytime sensitivity is expected because of reduced background noise due to the smaller field of view, the narrower 0.3 nm filter, and the lower levels of earthshine than at 532 nm.
Look for dim, gray earthshine illuminating the crescent Moon's night parts--the beautiful "old Moon in the new Moon's arm's" effect.
The delicate glow of the "dark side" of the Moon is light reflected off the Earth, called "earthshine".
Herschel also argued the case for active volcanism and topographic change on the lunar surface, observing in 1787 three glowing 'volcanoes' on the Moon's dark hemisphere--almost certainly the bright ray craters Aristarchus, Copernicus and Kepler, illuminated by earthshine. Indeed, if we leave aside Robert Hooke's 'bubble' theory of crater formation a century or so earlier, Herschel might well be regarded as the first 'British' selenographer to argue for a volcanic theory of crater formation--a view that, as we shall see, came to dominate and shape nearly all later British thinking about the nature of the Moon.
Last week the sliver moon was like a giant silver scythe lying in the night sky brilliantly lit by the phenomenon of Earthshine when light from the sun reflects from our spinning planet onto the visible moon's surface.