Gemini (constellation)

Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century AD astronomer Ptolemy. It is one of the 88 modern constellations today. Its name is Latin for "twins." It is from the twins Castor and Pollux in Greek mythology. Its symbol is 18px ().

Location
Gemini lies between Taurus to the west and Cancer to the east. Auriga and Lynx are to the north. Monoceros and Canis Minor are to the south.

Meteor showers
The Geminids are a meteor shower that can be seen best on December 13–14. People watching it see about 100 meteors per hour at most. It one of the richest meteor showers. The Epsilon Geminids peak between October 18 and October 29. They have only been recently confirmed. They overlap with the Orionids. This makes the Epsilon Geminids hard to see. Epsilon Geminid meteors move faster than Orionids.

Mythology

In Babylonian astronomy, the stars Castor and Pollux were known as the Great Twins (MUL.MASH.TAB.BA.GAL.GAL). The Twins were thought of as minor gods. They were called Meshlamtaea and Lugalirra. These names meant 'The One who has arisen from the Underworld' and the 'Mighty King'. Both names can be understood as titles of Nergal, the major Babylonian god of plague and pestilence. He was king of the Underworld.Babylonian Star-lore by Gavin White, Solaria Pubs, 2008, page 125

Visualizations

Castor and Pollux are the brightest stars in Gemini. They are two bright stars that appear very close together forming an o shape.

Astrology
The Sun appears in the constellation Gemini from June 20 to July 20. In tropical astrology, the Sun is in the sign Gemini from May 21 to June 22, and in sidereal astrology, from June 16 to July 15.

References


 H. A. Rey, The Stars — A New Way To See Them. Enlarged World-Wide Edition. Houghton Mifflin, Boston, 1997. .

 Ian Ridpath and Wil Tirion (2007). Stars and Planets Guide, Collins, London. . Princeton University Press, Princeton. .

Other websites

 The Deep Photographic Guide to the Constellations: Gemini
 Astrojan Astronomical Picture Collection : The clickable Gemini 
 WikiSky: Gemini constellation
 Ian Ridpath's Star Tales: Gemini
APOD Pictures of Gemini and Deep Sky Objects:
 [http://apod.nasa.gov/apod/ap090506.html A Spring Sky Over Hirsau Abbey]
 [http://apod.nasa.gov/apod/ap090503.html The Eskimo Nebula from Hubble]
 [http://apod.nasa.gov/apod/ap100612.html The Medusa Nebula]
 [http://apod.nasa.gov/apod/ap031215.html Open Star Clusters M35 and NGC 2158]
 [http://apod.nasa.gov/apod/ap050319.html NGC 2266: Old Cluster in the NGC]
 Constellation Guide: Gemini Constellation

Category:Constellations
Category:Constellations listed by Ptolemy