Astronomy Picture of the Day

Ptolemaeus, Alphonsus and Arzachel

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#98809 by @ 10.02.2007 00:00 - nach oben -
Ptolemaeus, Alphonsus and Arzachel


These three ancient, large impact craters lie on the
eastern shores
of Mare Nubium, the
lunar Sea of Clouds.

Along the top of
stark mosaic
(left to right) are
namesakes of
Ptolemaeus, Alphonsus and Arzachel.

The picture offers a remarkably detailed view of the
region with shadows emphasizing the large crater central peaks
and slumping walls.

Careful examination also reveals the 110 kilometer long
, a fault 200-300 meters high, and the intriguing
Davy crater chain.

Overall, the striking moonscape is similar to the final images
recorded by the
Ranger 9 spacecraft, before
it crashed into the 108 kilometer wide crater Alphonsus
in March of 1965.

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