earthshine


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earthshine

(erth -shÿn) (ashen light) Sunlight reflected from Earth. Close to new Moon, earthshine reflected by the Moon back to the Earth enables the whole lunar disk to become visible – the old Moon in the new Moon's arms. An observer on the Moon sees the Earth illuminated by earthshine and at new Moon can measure the Earth's albedo.

Earthshine

 

(earthlight), the faint luminescence of the portion of the visible disk of the moon not illuminated by direct sunlight. Observed when the moon is in the crescent phase, earthshine is caused by the reflection of sunlight by the earth when the greater part of the earth’s hemisphere illuminated by the sun is turned toward the moon. The first correct explanation of earthshine was given by the Italian scientist Leonardo da Vinci at the end of the 15th century.

earthshine

[′ərth‚shīn]
(astronomy)
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References in periodicals archive ?
There is always Earthshine on the moon, but it can be viewed by the naked eye only when the crescent moon is very slim.
The earthshine issue was never explored and Wilkinson's concerns remain unanswered by the FIRAS team to this day.
A classic set featuring a song for every year, including 2112, Spirit of Radio, Tom Sawyer, YYZ and from the latest album Earthshine, had a full house baying for more.
For example, Herschel's "volcanic eruptions" occurred when earthshine flooded Aristarchus--a very bright crater whose visibility varies according to seeing and illumination conditions.
On the nights of January 23 and 24, the Moon will show a crescent phase and you may be able to see Earthshine - where light reflecting from the - Earth illuminates what would otherwise be the "dark side" of The Moon.
The star tracker cameras took the images during lunar day with Earthshine lighting up the moon's surface, NASA officials said.
Section members have also contributed work to the BAA Journal during the session under review, including a note on earthshine by Nigel Longshaw (JBAA 120:4), a short paper on lunar cusp phenomena by Richard Baum (120:6), and a report on the total eclipse of 2010 Dec 21 by the Director (121:1).
Scientists studying Earthshine - Earthlight reflected off the Moon - found clear signs of water and an oxygen atmosphere, as well as suggestions of plant life.
The dark part of the Moon in the syzygies" refers to Earthshine inside the crescent near the time of new Moon.
As the sky darkens, many people will see the dark, left-hand portion of the lunar disk filled in with a ghostly glow known as earthshine.
That's when you can see both the sunlit sliver and the entire rest of the disk lit up by earthshine (see page 9).
Detection of such a delicate phenomenon, he realised, would critically depend on the strength of earthshine and the brightness of the sky; and of course, the phase and altitude of the Moon, a suite of circumstances not often encountered.