Astronomy Picture of the Day
    


At the Shadow s Edge
<< Yesterday 25.11.2021 Tomorrow >>
At the Shadow s Edge
Credit & Copyright: Jean-Francois Gout
Explanation: Shaped like a cone tapering into space, the Earth's dark central shadow or umbra has a circular cross-section. It's wider than the Moon at the distance of the Moon's orbit though. But during the lunar eclipse of November 18/19, part of the Moon remained just outside the umbral shadow. The successive pictures in this composite of 5 images from that almost total lunar eclipse were taken over a period of about 1.5 hours. The series is aligned to trace part of the cross-section's circular arc, with the central image at maximum eclipse. It shows a bright, thin sliver of the lunar disk still beyond the shadow's curved edge. Of course, even within the shadow the Moon's surface is not completely dark, reflecting the reddish hues of filtered sunlight scattered into the shadow by Earth's atmosphere.

Notable APOD Submissions: Lunar Eclipse of 2021 November 19

January
February
March
April
May
June
July
August
September
October
November
December
 < November 2021  >
Mo Tu We Th Fr Sa Su
1234567
891011121314
15161718192021
22232425262728
2930




Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: lunar eclipse
Publications with words: lunar eclipse
See also:
All publications on this topic >>