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When French astronomer听听began compiling a list of astronomical objects, more than 250 years ago, his initial goal was simply to differentiate night-sky objects that moved from those that didn鈥檛. What Messier and other astronomers really wanted to find were comets.

But his list of some of the brightest objects in the night sky would eventually include dozens of galaxies, nebulae and star clusters 鈥� things Messier had little conception of at the time. Today, amateur astronomers the world over still seek out the 110 Messier objects. For a real challenge, some attempt to find as many objects as possible in one night with a so-called听.

To celebrate the September 12 anniversary of when Charles Messier first began his catalog in 1758, we鈥檝e compiled a Mini Messier Marathon for you!

Image captured by Unistellar eVscope user Scott Kardel (USA)

Crab Nebula

The nebula that started it all, Messier 1 (M1), is a supernova remnant in the constellation Taurus. Messier wasn鈥檛 the first to record the object though, M1 likely corresponds to a supernova that Chinese astronomers noted in 1054 A.D.

Image captured by Unistellar eVscope user Jacques B茅rard (Canada)

Triangulum Galaxy

The third-largest of the Local Group of galaxies that includes the Milky Way, the Triangulum galaxy sits some 2.7 million light-years from Earth. Messier 33 (M33) is a small spiral galaxy that鈥檚 just visible with the naked eye.

Two images of the Pleiades stitched together by Unistellar eVscope user David Rowe (United Kingdom)

Pleiades

M45, also called the Seven Sisters, is an open star cluster found in the constellation Taurus. It鈥檚 made mostly of hot, blue stars, and is one of the closest star clusters to Earth.

Image captured by Unistellar eVscope user Gerd Waloszek (Germany)

Dumbbell Nebula

The Dumbbell Nebula (M27) was the first planetary nebula to be discovered, by Messier in 1764. Like other planetary nebulae, this apple core-shaped nebula formed from a dying star as it ejected its outer layers.

Image captured by Unistellar eVscope user Scott Kardel (USA)

Pegasus Globular Cluster

M15 is a dense globular cluster containing more than 100,000 stars packed tightly together. It鈥檚 thought to have undergone what鈥檚 known as 鈥渃ore collapse,鈥� when the central stars are drawn even closer to one another.

We encourage you to share your observations and join the conversation through our Facebook, Instagram and Twitter pages using the hashtag #UnistellarChallenge!

If you鈥檇 like to send us your observations by email, send them to听[email protected].

Clear skies!听馃敪

Further readings