 EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


 Lunar Crepuscular Rays in Italy

   October 06, 2021

    Raggi crepuscolari di Luna(1)

   Photographer:  Elena Paschetto

   Summary Author:  Elena Paschetto;  Cadan Cummings

   The spectacular scene above features  crepuscular rays observed over
   Sanfront, Italy. Formed when a cloud or landform on the viewer’s
   horizon partially blocks the light from the  Sun or  Moon,
   crepuscular rays are columns of light that appear to radiate toward a
   light source in the sky. Dust or aerosols in the air further enhance
   the effect by  scattering the incoming light. Surprisingly, the
   columns of light are parallel, although perspective makes the light
   appear to converge to the light source. The phenomenon primarily occurs
   during  twilight conditions, which is why it lends its name from the
   Latin word for twilight. Unique to most instances of rays that
   originate from the Sun, the picture above shows  lunar crepuscular
   rays created by the  Waning Gibbous Moon around 2:00am local time on
   July 29, 2021.

   Photo data: Canon EOS 80D, 18 mm, ISO 2500, f/4, 2 second exposure
     * Sanfront, Italy Coordinates: 44.6480, 7.3221

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   on Painted Pavement  22-Degree Halo Observed from Norfolk, Virginia
    Archive - Fog, San Francisco Skyline and Crepuscular Rays
    Anticrepuscular Rays Over Ontario, Canada  Lunar Corona over
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    More...

Atmospheric Effects Links

     *  Atmospheric Optics
     *  Color and Light in Nature
     *  The Colors of Twillight and Sunset
     *  Refraction Index
     *  Image Gallery: Atmospheric Effects
     *  What is a Rainbow?

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   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
