Astronomy Picture of the Day ·

The Extraordinary Spiral in LL Pegasi

The Astronomy Picture of the Day for November 29, 2021 is “The Extraordinary Spiral in LL Pegasi,” an image. The picture is copyrighted by its creator (Image Credit: NASA , ESA , Hubble , HLA ; Processing & Copyright: Jonathan Lodge). The original explanation runs about 155 words.

The featured image shows an unusual spiral structure in the binary star system LL Pegasi as captured by the Hubble Space Telescope. Please see the explanation for more detailed information.
Credit: Image Credit: NASA , ESA , Hubble , HLA ; Processing & Copyright: Jonathan Lodge Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“What created the strange spiral structure on the upper left? No one is sure, although it is likely related to a star in a binary star system entering the planetary nebula phase, when its outer atmosphere is ejected.”

— APOD editors, November 29, 2021

Read the full explanation on science.nasa.gov

At a glance

Date
November 29, 2021
Type
Image
Credit
Credit: Image Credit: NASA , ESA , Hubble , HLA ; Processing & Copyright: Jonathan Lodge
Copyright
Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length
About 155 words

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Topics in this entry

Nebulae

Topics are matched from words in the title and explanation.

On this day: November 29 in other years

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Source

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.