What is a Messier galaxy?
A Messier galaxy is a galaxy listed in the Messier Catalog — a 1781 compilation of 110 deep-sky objects assembled by French astronomer Charles Messier. About 40 of the 110 are galaxies; the rest are nebulae, star clusters, and supernova remnants. Today, the Messier galaxies remain among the most observed, most photographed, and most beloved targets in the night sky — and the catalog designations (M31 for Andromeda, M51 for the Whirlpool) have stuck for over two centuries.
The unlikely origin of the catalog
Charles Messier wasn’t trying to catalog galaxies. He was a comet hunter, working from the rooftop of the Hotel de Cluny in Paris during the 1760s and 70s, when comets were a hot scientific frontier and discovering one could earn fame and a royal pension.
The problem: every time Messier swept the sky for new comets, he kept getting fooled by faint, fuzzy patches that looked like comets but never moved. Galaxies, nebulae, star clusters — from the limited resolution of an 18th-century telescope, they all appeared as the same kind of soft glow.
Frustrated, Messier began compiling a list of these “things that aren’t comets” specifically so other comet hunters could ignore them. The first edition (1771) had 45 entries; the final version (1781) had 110. Messier himself died in 1817 having no idea his frustrated list would become one of the most useful astronomical catalogs ever made.
Why Messier objects are still useful
The Messier Catalog covers exactly the brightest, most observable deep-sky objects visible from the Northern Hemisphere with a small telescope. That makes them perfect targets for amateur astronomers, beginning observers, and astrophotographers — even today, “running the Messier Marathon” (observing all 110 objects in a single night) is a rite of passage among amateur astronomers.
Professional astronomers still use Messier designations alongside the more comprehensive NGC (New General Catalogue, 7,840 objects, 1888) and IC (Index Catalogue, 5,386 additional objects, 1895/1908). M31 = NGC 224 = Andromeda Galaxy — same object, three different catalog references, depending on what era of astronomy you’re reading.
The most famous Messier galaxies
Of the ~40 galaxies in the Messier Catalog, eight are particularly well-known and widely observed. All are in our Named tier on The Galactic Registry — once dedicated, they’re permanently removed from the available pool.
Closest large galaxy to ours, 2.537 million ly away
Iconic spiral with companion galaxy NGC 5195
Edge-on spiral with prominent dust lane
Face-on spiral, 21 million ly away in Ursa Major
Bright spiral, 12 million ly away
Starburst galaxy, M81's neighbor
Giant elliptical, first black hole imaged in 2019
Third-largest in the Local Group, 2.73 million ly
How Messier galaxies fit in our registry
Of the four pricing tiers on The Galactic Registry, Messier galaxies live primarily in the Named tier ($149). This is the tier most buyers pick — 4 in 5 dedications use it — specifically because Messier objects are the named galaxies people recognize.
A handful of the most iconic deep-sky objects appear in our Signature tier ($299), limited to 5 dedications total: JWST’s First Deep Field, the Hubble Ultra Deep Field, the Rose (Arp 273), GN-z11, and the Spindle Galaxy. These cannot be re-dedicated — once claimed, gone.
Pick a Messier galaxy
Browse all eight major Messier galaxies in the registry. Each comes with real coordinates, distance, morphology, and is dedicated permanently — once claimed, removed from the available pool. View the full catalog of 2,068 galaxies.
Start with Andromeda →Common questions
What is a Messier galaxy?
A Messier galaxy is a galaxy listed in the Messier Catalog — a list of 110 deep-sky objects compiled by French astronomer Charles Messier between 1771 and 1781. About 40 of the 110 entries are galaxies; the rest are nebulae, star clusters, and supernova remnants. Messier objects are designated 'M' followed by a number — M31 is the Andromeda Galaxy, M51 is the Whirlpool, M104 is the Sombrero.
Why is the Messier Catalog still used today?
Two reasons. First, Messier objects were chosen specifically as the brightest, most observable deep-sky targets visible from the Northern Hemisphere — they remain ideal targets for amateur astronomers and small telescopes. Second, the M-designations have stuck for 240 years; both casual stargazers and professional astronomers still use them alongside more comprehensive catalogs like NGC and IC.
Which Messier galaxies are most famous?
M31 (Andromeda Galaxy), M51 (Whirlpool Galaxy), M104 (Sombrero Galaxy), M101 (Pinwheel Galaxy), M81 (Bode's Galaxy), M82 (Cigar Galaxy), M87 (Virgo A), and M33 (Triangulum Galaxy). All eight are in our Named tier ($149) on The Galactic Registry. Each can be dedicated only once — when claimed, removed from the available pool permanently.
Why did Charles Messier make the catalog?
Ironically, Messier wasn't trying to catalog galaxies. He was a comet hunter, and he kept getting fooled by faint, fuzzy objects in the sky that looked like comets but didn't move. He compiled the catalog as a list of 'things that aren't comets' — a frustrated comet-hunter's list. Today it's one of the most useful astronomical catalogs ever made.
Can I dedicate a Messier galaxy?
Yes — all the major Messier galaxies are in our Named tier ($149) on The Galactic Registry. The dedication is filed permanently in our public archive and a 12×18 archival cotton certificate ships with real coordinates, distance, and the M-designation prominent on the front. Each Messier galaxy can only be dedicated once.
Eight named galaxies. One of them is yours.
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Dedicate a Messier Galaxy