RUM Planetarium
projection room in the University of Puerto Rico
The RUM Planetarium is the first planetarium in Puerto Rico. It is located in the fourth floor of the Physics building of the University of Puerto Rico at Mayagüez in Mayagüez, Puerto Rico.
Planetarium and observatory
The Physics department of the UPRM College of Arts and Sciences currently run the Planetarium and its Astronomical Observatory. Both were inaugurated in 1973 and have continued working and functioning uninterruptedly since.
The Planetarium is a projection room whose hemispherical screen simulates the Celestial sphere. In this screen one can observe close to 4,000 stars, simulating the sky as seen from anywhere in the world and at any time of year. The Planetarium has room for sixty-four people sitting in reclinable seats, allowing greater visibility into the dome. The star projector is located in the center of the hall and is controlled from a computerized console. Apart from its academic uses in the University of Puerto Rico, the Planetarium is used as a complement to the curriculum of public and private schools in Puerto Rico in the areas of physics, astronomy, Earth Sciences and space sciences.
The Observatory of the Physics Department also have a telescope with a 16-inch-diameter (410 mm) primary mirror.
“RUM Planetarium” enters the record as projection room in the University of Puerto Rico. Crown Archives preserves that source wording while asking what Planetarium, projection and room can confirm, complicate or overturn.
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Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Feb 25, 2026. The linked authority identifier is Q7277976. Authority coordinates are 18.211, -67.139. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1973.
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This entry incorporates text from “RUM Planetarium” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.