The Small Sagittarius Star Cloud (also known as Messier 24 and IC 4715) is a star cloud in the constellation of Sagittarius approximately 600 light years wide, which was catalogued by Charles Messier in 1764. It should not be confused with the nearby
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The Summer Triangle is called that because its three bright stars dominate the high night sky during the summer months in the Northern Hemisphere.
It is an asterism, which is an easy-to-recognize pattern of stars rather than an official constellation
Messier 4 or M4 (also known as NGC 6121 or the Spider Globular Cluster) is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1745 and catalogued by Charles Messier in 1764. It was the first globula
Hoag's Object is an unusual ring galaxy in the constellation of Serpens Caput. It is named after Arthur Hoag, who discovered it in 1950 and identified it as either a planetary nebula or a peculiar galaxy. The galaxy has a D25 isophotal diameter of 45
The Wild Duck Cluster (also known as Messier 11, or NGC 6705) is an open cluster of stars in the constellation Scutum (the Shield). It was discovered by Gottfried Kirch in 1681. Charles Messier included it in his catalogue of diffuse objects in 1764.
Messier 38 (M38), also called the Starfish Cluster, is an open star cluster located in the constellation Auriga.
Object Type: Open star cluster Other Designations: NGC 1912, Starfish Cluster Constellation: Auriga Distance: About 3,500 to 4,200 light-
Messier 37 (M37 or NGC 2099) is a rich open star cluster in the constellation Auriga. Located about 4,511 light-years from Earth, it shines at a magnitude of 6.2 and holds over 500 stars, earning the nickname the "Salt and Pepper Cluster".
Constellat
Messier 36 (M36), also called the Pinwheel Cluster, is a young open star cluster in the constellation Auriga. It lies about 4,100 light-years away and contains roughly 60 member stars. Discovered before 1654 by Giovanni Battista Hodierna, it shines a
Messier 46 (M46) is a rich open star cluster in the constellation Puppis, containing about 500 stars and located roughly 5,000 light-years away, making it a popular target for amateur astronomers. A notable feature is the planetary nebula NGC 2438, w
Messier 47 (M47 or NGC 2422) is a bright, young open star cluster in the constellation Puppis, located about 1,600 light-years away, known for its hot, blue stars and a few orange giants, making it visually similar to the Pleiades but without the sur
NGC 5643 is a grand design spiral galaxy in the constellation Lupus, located about 40-60 million light-years away, similar in size to the Milky Way. It's known as a Seyfert galaxy, meaning it has an active galactic nucleus (AGN) with a supermassive
Messier 2 (M2 or NGC 7089) is one of the largest and oldest globular clusters in the Milky Way, located about 37,500 to 55,000 light-years away in the constellation Aquarius. Discovered in 1746, this ancient 13-billion-year-old cluster contains over
Terzan 5 is a massive, dense stellar system in the Milky Way's bulge, reclassified as a "bulge fossil fragment" because it contains multiple generations of stars, unlike typical globular clusters. It's a relic from the early galaxy, containing up to
Messier 82 (M82), also known as the Cigar Galaxy, is a starburst galaxy in the constellation Ursa Major, about 12 million light-years away, famous for its intense star formation and fiery plumes of gas. It's an edge-on spiral galaxy that forms stars
Messier 81 (M81), also known as Bode's Galaxy, is a bright, grand-design spiral galaxy in the constellation Ursa Major, about 12 million light-years away, making it a popular target for amateur astronomers. It's easily visible with binoculars and sma
Messier 92 (M92) is a bright, ancient globular star cluster in the constellation Hercules, located about 27,000 light-years from Earth. It's one of the oldest and brightest globular clusters in the Milky Way, containing roughly 330,000 stars and appe
Messier 22 (M22) is a bright, large globular star cluster in the constellation Sagittarius, located about 10,000 light-years away, making it one of the closest to Earth. Discovered in 1665, it's visible as a fuzzy patch in the sky and is notable for
The Whirlpool Galaxy (M51) is a stunning, face-on spiral galaxy located about 23-31 million light-years away in the constellation Canes Venatici, known for its well-defined spiral arms and its interaction with a smaller companion galaxy, NGC 5195, wh
Messier 41 (M41) is an open star cluster in the constellation Canis Major, located about four degrees south of Sirius, making it easy to find with binoculars or a small telescope. Also known as NGC 2287, it contains about 100 stars, including several
Messier 3 (M3) is a large, bright globular star cluster in the constellation Canes Venatici, containing over 500,000 stars and notable for its high number of variable stars (over 274). Located about 34,000 light-years away, it's an ancient cluster, e
