ScienceSeptember 3, 2026
planetarium
plan-uh-TAIR-ee-um
Definition
A theater or building containing a specialized projector that displays an image of the stars, planets, and other celestial bodies on a domed ceiling.
Etymology
Derived from the Latin 'planeta' (planet) and the suffix '-arium' (a place for), the word emerged in the early 20th century to describe devices and buildings designed to demonstrate planetary motion.
In the news
The article uses planetarium to refer to the Allen F. Blocher facility at UW-Stevens Point, which hosts educational shows about the night sky and outer space.
UW-Stevens Point offering planetarium shows and stargazing sessions in September
Read the full article ↗University of Wisconsin-Stevens Point