Start Date: End Date: Published Date Data Date
Data acquired April 1, 2015 720 x 480 JPEG
Data acquired April 1, 2015 2000 x 1333 864 KB - JPEG
In twilight conditions, green lasers that measure polar ice are easily visible with the naked eye.
NASA image courtesy Eric Fraim, Digital Mapping System. Caption by Kathryn Hansen.
Published April 5, 2015 Data acquired April 1, 2015