Astronomy Picture of the Day ·

Messier 33: The Triangulum Galaxy

The Astronomy Picture of the Day for September 18, 2026 is “Messier 33: The Triangulum Galaxy,” an image. The picture is copyrighted by its creator (George Chatzifrantzis). The original explanation runs about 177 words.

Image of a face-on spiral galaxy.
Credit & Copyright: George Chatzifrantzis Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“The small, northern constellation Triangulum harbors this magnificent face-on spiral galaxy, Messier 33. Its popular names include the Pinwheel Galaxy or just the Triangulum Galaxy.”

— APOD editors, September 18, 2026

Read the full explanation on science.nasa.gov

At a glance

Date
September 18, 2026
Type
Image
Credit
Credit & Copyright: George Chatzifrantzis
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

The Milky WayAndromeda GalaxyGalaxies

Topics are matched from words in the title and explanation.

On this day: September 18 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.