Astronomy Image of the Day
Eclipse on a Polar Day
10 December 2021
Stephanie Ziyi Ye
NASA Astronomy Image of the Day for 10 December 2021
During polar day, in Arctic and Antarctic summer, the Sun stays above the horizon for periods of 24 hours or more. Recorded on December 4, this fisheye timelapse image tracks the Sun in multiple frames as it completes a circle in the summer sky above Union Glacier, Antarctica. Of course on that date, Union Glacier's sky did grow dark even though the Sun was above the horizon. Captured during the brief period of totality, an eclipsed Sun is at bottom center of the composite view. Near the edge of the total eclipse path across planet Earth, the Moon's shadow darkens the sky above.
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Image and explanation courtesy of NASA Astronomy Picture of the Day





