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Astronomy Picture of the Day
A Sun Halo Over Tennessee
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#69342
by
[z]Barbara Harris
@
10.03.2005 00:00
- nach oben -
A Sun Halo Over Tennessee
Explanation:
Sometimes it looks like the Sun is being viewed through a large
lens
.
In the above case, however, there are actually millions of lenses:
ice crystals
.
As water freezes in the upper
atmosphere
, small, flat, six-sided, ice crystals might be formed.
As these
crystals
flutter to the ground, each
crystal
can act like a miniature lens,
refracting sunlight into our view.
The
above image
was taken near sunset last month near Nashville,
Tennessee
,
USA
.
Dramatically visible
behind neighborhood houses and trees and above the cloud deck is the
22 degree halo
created by
sunlight refracting
off of atmospheric ice crystals.
Credit & Copyright