Astronomy Picture of the Day · September 1, 2011

M27: Not a Comet

The Astronomy Picture of the Day for September 1, 2011 is “M27: Not a Comet,” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Martin Pugh). The original explanation runs about 196 words.

From the explanation

“While hunting for comets in the skies above 18th century France, astronomer Charles Messier diligently kept a list of the things he encountered that were definitely not comets. This is number 27 on his now famous not-a-comet list .”

— APOD editors, September 1, 2011

Read the full explanation on science.nasa.gov

At a glance

Date: September 1, 2011
Type: Image
Credit: Credit: Image Credit & Copyright: Martin Pugh
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 196 words

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Topics in this entry

Nebulae Comets

Topics are matched from words in the title and explanation.

On this day: September 1 in other years

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Source

Astronomy Picture of the Day, September 1, 2011 — science.nasa.gov/image-article/apod-2011-september-1-m27-not-a-comet

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.