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earthshine

earthshine

1 7.2
A faint light on the moon's dark part that comes from sunlight bouncing off Earth
  • noun
  • /ˈɜrθˌʃaɪn/
  • Specialized
: luz terrestre
  • So earthshine was unexplained until Leonardo da Vinci.
  • moon illuminated by earthshine
  • glow of earthshine

Examples

  • A gorgeous crescent moon ripe with earthshine hangs low in the western sky.

  • The sunlit part of the lunar surface was sharp, but the portion lit only by earthshine really impressed me.

  • This cooling happens at all levels where the sunshine hits the carbon dioxide the same as the earthshine.

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  • (I am afraid that simple heat retention testing might not work here; we have to use real sunshine and real earthshine to determine the effect in W/m3 0.03%-0.06% CO2/m2/24 hours).

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  • I do not know if this represents a real effect, possibly associated with the onset of earthshine-window pinch-off, or if it is a dynamic range limitation problem with the MODTRAN model data or calculations.

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  • We could have a whole fleet of space-based interferometer telescopes heading for the outer solar system where Earthshine, the Sun, and Zodiacal Light don't hamper the viewing.

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  • Look for earthshine filling in the rest of the Moon's shape, aglow from sunlight reflected off Earth.

Synonyms

earthlight
vsearthshine
  • Specialized
1 9.2

Light from Earth makes a faint glow on the moon's dark side

means the same but is an alternative name for the same phenomenon

Surface Forms

earthshine singular
earthshines plural

Morphology

earthshine = earth + shine (semi-transparent) = earth + shine

While the components 'earth' and 'shine' are clear, the specific meaning related to moonlight is specialized and not immediately obvious.

Etymology

The word earthshine is simply earth + shine, where shine means 'light', like in sunshine. That's why earthshine is the faint glow you sometimes see on the moon's dark side when sunlight reflects off Earth.