ashen light


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ashen light

1. The faint glow claimed to be occasionally observed on the unlit area of Venus in its crescent phase. Its cause is unknown but it might result from bombardment of atmospheric atoms and molecules by energetic particles and radiation, as with terrestrial airglow.
2. See earthshine.

ashen light

[′ash·ən ¦līt]
(astronomy)
A faint, luminous glow sometimes observed over the right side of Venus when it is close to inferior conjunction, probably due to electrical disturbances in the ionosphere of Venus.
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References in periodicals archive ?
Scientists have previously reported that the night side Venus atmosphere also produces a glow, called the ashen light.
The Ashen Light was again reported by a rather small number of visual observers, and these records will be dealt with in a later report.
The residual hush of interiors resplendent in mahogany and metal, the crumbling statuary on soot-streaked pediments, the soaring flights of marble columns are all softly dusted with this ashen light which translates, to the history-minded viewer's eye, as the physical counterpart of time.
As the ghostly ashen light of dawn filtered into the eastern sky, Dennis spotted a lonely out-of-place boy as young as himself.
Royal Match (Ryan Jarvis) is too good for Amboise (Henry Cecil/Alan Bond) in the mile-and-a-half handicap and Breast Stroke (Jeremy Hindley) takes the nursery from Ashen Light (Anthony Johnson/George Duffield).
As early as 1600, Galileo had begun to transfer his artist's knowledge of reflection and secondary light to his study of the moon and its mysterious ashen light.
On April 24 I received an email from Detlev Niechoy (Germany) who strongly suspected the Ashen Light (AL) late that evening, from 21:00-21:50h UT.
lA change of fortune for Anthony Johnson as Ashen Light wins the fillies' maiden at Wolverhampton, giving the trainer just his second winner of the year.
The author cites my BAA Ashen Light statistics paper as 'an exhaustive review of the British Astronomical Association's observational archives', but in fact it was an exhaustive account of the work of just two of the BAA's long-standing observers, namely Henry McEwen and Patrick Moore.
In his book Life Among the Stars, (10) Firsoff recalled a later view on 1961 Mar 27 under superb seeing conditions when the Ashen Light stood out clearly on the dark side: '.
Observers can make a great contribution to our work by undertaking a regular Ashen Light patrol.
During the crescent phase, the planet's higher altitude made for favourable conditions for searching for the Ashen Light (AL) or infrared thermal emission (IRTE).