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Credit & Copyright: Stefan
Seip
Explanation:
This remarkable telescopic image highlights the deep orange
cast of a
waning
gibbous
Moon seen very close to the eastern
horizon earlier this week, on September 19.
In fact, today's equinox
at 22:23 UT
marks the beginning of Fall in the Northern Hemisphere
and makes this view from Stuttgart, Germany an almost
Autumn
Moon.
While the long sight-line through the atmosphere filters and reddens
the moonlight, it also bends different colors of light through
slightly different angles, producing noticeable
red (bottom) and green (top) lunar rims.
Also captured here floating just below the Moon is
a thin, red mirage (inset) -- in this case, an atmospherically
magnified and distorted
image of the red rim.
Of course, this tantalizing lunar "red flash" is
related to
the more commonly seen
green flash
of the Sun.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: Moon - green flash
Publications with words: Moon - green flash
See also: