A constellation is a grouping of stars that represents one of the 88 divisions of the celestial sphere as defined by the International Astronomical Union. Many constellations are derived from old traditional asterisms, which are star patterns within a constellation. An example: the Big Dipper is an asterism inside of the Ursa Major constellation.

April Highlights. April 21: The bright star Regulus appears near the waxing gibbous Moon. April 22: On Earth Day, look for the 'Belt of Venus' forming an arch with Earth's shadow at sunset. The annual Lyrid meteor shower is expected to peak early in the morning. April 26: This month's full Moon is the Pink Moon.; All month: The constellation Leo, named for a mythical super-powered lion, is.

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Seasons listed are for mid-northern latitudes. For southern latitudes, flip the season listed. For example, if a constellation is listed as best viewed in the summer, in the southern hemisphere the constellation would be best viewed in the winter and would be upside-down. Circumpolar constellations are visible year-round in their hemisphere.

Constellations shown with a symbol are the Zodiac constellations.

Antlia
Air Pump
southern

Aquarius ♒
Water Bearer
southern

Ara
Altar
southern

Auriga
Charioteer
northern

Caelum
Chisel
southern

Cancer ♋
Crab
northern

Canis Major
Greater Dog
southern

Capricornus ♑
Goat
southern

Cassiopeia
Andromeda's mom
north circumpolar

Cepheus
Ethiopia King
north circumpolar

Chamaeleon
Chamaeleon
southern

Columba
Dove
southern

Corona Australis
Southern Crown
southern

Corvus
Crow
southern

Crux
Southern Cross
south circumpolar

Delphinus
Dolphin
northern

Draco
Dragon
north circumpolar

Eridanus
River
southern

Gemini
Twins
southern

Hercules
Hercules
northern

Hydra
Water Monster
southern

Indus
Indian
southern

Leo ♌
Lion
northern

Lepus
Hare
southern

Lupus
Wolf
southern

Lyra
Harp
northern

Microscopium
Microscope
southern

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Musca
Fly
southern

Octans
Octant
southern

Orion
Hunter
northern

Pegasus
Winged Horse
northern

Phoenix
Phoenix
southern

Pisces ♎
Fishes
northern

Puppis
Stern
southern

Reticulum
Reticle
southern

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Sagittarius ♐
Archer
southern

Sculptor
Sculptor
southern

Serpens
Serpent
northern

Taurus ♉
Bull
northern

Triangulum
Triangle
northern

Tucana
Toucan
southern

Ursa Minor
Little Bear
north circumpolar

Virgo
Virgin
southern

Vulpecula
Fox
northern

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