This Week in Astronomy with Dave Eicher: Observe the Pinwheel Galaxy

This wonderful deep-sky object in the constellation Triangulum is well positioned for your telescope.
By | Published: November 3, 2025 | Last updated on November 4, 2025

The Pinwheel Galaxy (M33) is the third largest member of the Local Group of galaxies. It lies in the constellation Triangulum.
Credit: Bernhard Hubl
Gemini Sparkle

Key Takeaways:

  • Dave Eicher, Editor Emeritus for *Astronomy* magazine, encourages evening skygazers to observe the Pinwheel Galaxy.
  • The Pinwheel Galaxy is also known by its alternative designation, the Triangulum Galaxy.
  • It was cataloged by Charles Messier as the 33rd entry on his list of nebulous objects, henceforth known as Messier 33.
  • This galaxy holds distinction as the third largest member of the Local Group, a galactic cluster that includes the Milky Way.
Key takeaways sponsored by The Space Store

In this episode, Astronomy magazine Editor Emeritus Dave Eicher invites you to head out in the evening and observe the Pinwheel Galaxy, also known as the Triangulum Galaxy. Charles Messier made this spiral galaxy the 33rd entry on his list of fuzzy objects that weren’t comets. It’s the third largest member of the Local Group, which includes our Milky Way. Good luck!

You can see it here.

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