Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
DroneDeploy Partners with SLANTRANGE and Sentera to Provide Accurate Crop Health Analysis Using Near-Infrared and Multispectral Sensors
SAN FRANCISCO, CA -  DroneDeploy, the leading drone software...
URISA Board Candidates Announced
Des Plaines, IL - URISA’s Leadership Development Committee recently...
OGC Publishes Results of International Arctic Spatial Data Pilot
The Open Geospatial Consortium (OGC®) is pleased to announce...
LizardTech and Extensis Optimize Digital Asset Management for Geospatial Data
US: LizardTech and Extensis have announced the availability of Extensis...
Oregon’s First UAS Summit & Expo Set for August in Bend
BEND, Ore.- Emerging trends and technologies shaping the unmanned...

Click on image to enlarge.

The shadowed areas bounding the crepuscular rays in this image are formed by clouds or mountain tops that block the path of sunlight or moonlight. However, obstructions alone aren’t sufficient to create crepuscular rays. The light also must be scattered by additional phenomena, including airborne dust, aerosols, water droplets and molecules of air, providing a visible contrast between shadowed and illuminated parts of the sky.

 

When observed from the ground, crepuscular rays appear to radiate outward from the source of light due to the effects of distance and perspective. However, the rays actually are parallel. This astronaut photograph from the International Space Station (ISS) provides an unusual viewing perspective from above the rays and a clear illustration of their parallel nature.

 

The sun was setting to the west (image left) on the Indian subcontinent, and cumulonimbus cloud towers provided the shadowing obstructions. The rays are being projected onto a layer of haze below the clouds.

 

To learn more about crepuscular rays, click here.

This astronaut photo was acquired on Oct. 18, 2011, with a Nikon D2Xs digital camera using a 110mm lens, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Center. The image was taken by the Expedition 29 crew.

 

Caption by William L. Stefanov, Jacobs/ESCG at NASA-JSC

Instrument: ISS - Digital Camera

NASA Website

Comments are closed.