A planetarium is a theater built primarily for presenting educational and entertaining shows about astronomy and the night sky, or for training in celestial navigation. A dominant feature of most planetaria is the large dome shaped projection screen onto which scenes of stars, planets and other celestial objects can be made to appear and move realistically to simulate the complex 'motions of the heavens'. The celestial scenes can be created using a wide variety of technologies, ranging from precision-engineered 'star balls' that combine optical and electro-mechanical technology, through slide projector, video and digital projector systems to lasers. Whatever technologies are used, the objective is normally to link them together to provide an accurate relative motion of the sky. Typical systems can be set to display the sky at any point in time, past or present, and often to show the night sky as it would appear from any point of latitude on Earth.

• The plural of planetarium can be either planetariums or planetaria.
• The term planetarium is sometimes used generically to describe other devices which illustrate the solar system, such as a computer simulation or an orrery.
• The term planetarian is used to describe a member of the professional staff of a planetarium.
• Planetarium software refers to a software application that renders a three dimensional image of the sky onto a two dimensional computer screen.

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@MrPrudence you might want to ask @nebogeo about the fluxus code for planetariums.
zzkt (nik gaffney) Mon, 21 Dec 2009 10:03:01 -0000
@MrPrudence you might want to ask @nebogeo about the fluxus code for planetariums.
Photo: misscaligula:expecto-patronum:hasslethehoff:planetariums: cheekyotter:megapeas:wakethegiants:(via... http://tumblr.com/xu14ue0kh
rosemarypaige (Rosemary Sandifer) Mon, 21 Dec 2009 05:48:59 -0000
Photo: misscaligula:expecto-patronum:hasslethehoff:planetariums: cheekyotter:megapeas:wakethegiants:(via... http://tumblr.com/xu14ue0kh
Photo: planetariums: I live a little to the right of the dot … on Long Island. We’re supposed to get pounded http://tumblr.com/xbl4stxaj
Micalovesmusic (Mica) Sat, 19 Dec 2009 14:05:34 -0000
Photo: planetariums: I live a little to the right of the dot … on Long Island. We’re supposed to get pounded http://tumblr.com/xbl4stxaj
Hayden Planetariums digital universe atlas, free for download > http://www.haydenplanetarium.org/universe/
john_nielsen (john nielsen) Fri, 18 Dec 2009 13:47:45 -0000
Hayden Planetariums digital universe atlas, free for download > http://www.haydenplanetarium.org/universe/
@R_Rich And you shouldn't sleep on science museums, planetariums, etc... I'm a biochem major so I love science.
StreetRadioEnt (Marissa M.) Thu, 17 Dec 2009 06:30:18 -0000
@R_Rich And you shouldn't sleep on science museums, planetariums, etc... I'm a biochem major so I love science.
@glen_malley I like My! Very Educated Morons Just Screwed Up Numerous Planetariums
sandrajapandra (Sandra Barron) Thu, 17 Dec 2009 02:42:54 -0000
@glen_malley I like My! Very Educated Morons Just Screwed Up Numerous Planetariums

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