Astronomy Picture of the Day · February 9, 2007

Ptolemaeus, Alphonsus and Arzachel

The Astronomy Picture of the Day for February 9, 2007 is “Ptolemaeus, Alphonsus and Arzachel,” an image. The picture is copyrighted by its creator (Credit & Copyright: Alan Friedman). The original explanation runs about 113 words.

From the explanation

“These three ancient, large impact craters lie on the north eastern shores of Mare Nubium, the lunar Sea of Clouds. Along the top of the stark mosaic (left to right) are the namesakes of Ptolemaeus, Alphonsus and Arzachel.”

— APOD editors, February 9, 2007

Read the full explanation on science.nasa.gov

At a glance

Date: February 9, 2007
Type: Image
Credit: Credit & Copyright: Alan Friedman
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 113 words

All of February 2007 → · 2007 by month → · Full archive since 1995 →

Topics in this entry

The Moon

Topics are matched from words in the title and explanation.

On this day: February 9 in other years

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Source

Astronomy Picture of the Day, February 9, 2007 — science.nasa.gov/image-article/apod-2007-february-9-ptolemaeus-alphonsus-and-arzachel

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.