Planetarium

Silesian Planetarium in Chorzow (Königshütte)

A planetarium is a building which has a dome-shaped ceiling with a special projector in the middle. It is used to present educational shows on astronomy, and sometimes celestial navigation.

The building itself often (but not always) has a domed roof. Styles of planetariums vary; additional rooms are often included, and sometimes a flat or slanted roof covers a dome-shaped mesh or screen. The projector in the center of the planetarium's main room projects a simulation of a night sky, which can be adjusted to any time of the night and year.[1]

## References[edit]

1. ↑ "planetarium." Encyclopaedia Britannica. Britannica Academic. Encyclopædia Britannica Inc., 2016. Web. 16 Jun. 2016. <http://0-academic.eb.com.www.consuls.org/EBchecked/topic/463041/planetarium>.