Astronomy Picture of the Day ·

New Ghosts Revealed in Cassiopeia

The Astronomy Picture of the Day for October 21, 2026 is “New Ghosts Revealed in Cassiopeia,” an image. The picture is copyrighted by its creator (Louis Leroux-Géré, Thibault Rouillée, Vincent Martin, Cédric de Decker (Starfront Observatories)). The original explanation runs about 177 words.

The sky is speckled with stars. Bright tufts of emission nebulae trace across the image's equator. Arcs and smudges of ionized oxygen emission also included.
Credit & Copyright: Louis Leroux-Géré, Thibault Rouillée, Vincent Martin, Cédric de Decker (Starfront Observatories) Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Jinkies, look at all those ghosts! It took 100 hours of observation and a special oxygen filter for today’s image to capture three faint nebulas hidden in the Cassiopeia constellation.”

— APOD editors, October 21, 2026

Read the full explanation on science.nasa.gov

At a glance

Date
October 21, 2026
Type
Image
Credit
Credit & Copyright: Louis Leroux-Géré, Thibault Rouillée, Vincent Martin, Cédric de Decker (Starfront Observatories)
Copyright
Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length
About 177 words

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Topics in this entry

Nebulae

Topics are matched from words in the title and explanation.

On this day: October 21 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.