Astronomy Picture of the Day · August 16, 2011

Shapley 1: An Annular Planetary Nebula

The Astronomy Picture of the Day for August 16, 2011 is “Shapley 1: An Annular Planetary Nebula,” an image. It is credited to Image Credit: ESO. The original explanation runs about 92 words.

From the explanation

“What happens when a star runs out of nuclear fuel ? For stars about the mass of our Sun, the center condenses into a white dwarf while the outer atmospheric layers are expelled into space and appear as a planetary nebula .”

— APOD editors, August 16, 2011

Read the full explanation on science.nasa.gov

At a glance

Date: August 16, 2011
Type: Image
Credit: Credit: Image Credit: ESO
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 92 words

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Topics in this entry

The Sun Nebulae

Topics are matched from words in the title and explanation.

On this day: August 16 in other years

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Source

Astronomy Picture of the Day, August 16, 2011 — science.nasa.gov/image-article/apod-2011-august-16-shapley-1-an-annular-planetary-nebula

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.