Trifid Nebula (Messier 20)
The Trifid Nebula is a bright H II region located 4,100 light-years away in the southern constellation Sagittarius. With an apparent magnitude of 6.3 and… Read More »Trifid Nebula (Messier 20)
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- Auriga Constellation
- Boötes Constellation
- Caelum Constellation
- Camelopardalis Constellation
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- Carina Constellation
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- Cepheus Constellation
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- Chamaeleon Constellation
- Circinus Constellation
- Columba Constellation
- Coma Berenices Constellation
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- Microscopium Constellation
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- Musca Constellation
- Norma Constellation
- Octans Constellation
- Ophiuchus Constellation
- Orion Constellation
- Pavo Constellation
- Pegasus Constellation
- Perseus Constellation
- Phoenix Constellation
- Pictor Constellation
- Pisces Constellation
- Piscis Austrinus Constellation
- Puppis Constellation
- Pyxis Constellation
- Reticulum Constellation
- Sagitta Constellation
- Sagittarius Constellation
- Scorpius Constellation
- Sculptor Constellation
- Scutum Constellation
- Serpens Constellation
- Sextans Constellation
- Taurus Constellation
- Telescopium Constellation
- Triangulum Australe Constellation
- Triangulum Constellation
- Tucana Constellation
- Ursa Major Constellation
- Ursa Minor Constellation
- Vela Constellation
- Virgo Constellation
- Volans Constellation
- Vulpecula Constellation
- Constellation Map
- Constellation Names
- Asterisms
- Big Dipper
- Little Dipper
- Orion’s Belt
- Orion’s Sword
- Southern Cross
- Summer Triangle
- Northern Cross
- Cassiopeia’s W
- Spring Triangle
- Great Diamond
- Winter Hexagon
- Winter Triangle
- Teapot
- The Kite
- Great Square of Pegasus
- Water Jar
- False Cross
- Diamond Cross
- The Fish Hook
- The Sickle
- Pointer Stars
- Auriga’s Hexagon
- Spica’s Spanker
- The Coathanger (Brocchi’s Cluster)
- Kemble’s Cascade
- The Keystone
- Three Leaps of the Gazelle
- Messier Objects
- Constellations by Month
- Seasonal Constellations
- What Is a Constellation?
- Caldwell Catalogue
- Telescopes and Night Sky Guides