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Planetarium
01
a building with a dome in which moving images of planets, starts, and constellations are projected for educational or entertainment purposes
Examples
The school field trip included a visit to the planetarium to learn about the solar system.
We watched a fascinating documentary about black holes at the local planetarium.
02
a device that simulates the motion and appearance of celestial objects such as planets, stars, and galaxies, typically using projectors and optical systems to depict the solar system and universe
Examples
The planetarium displayed a detailed model of the solar system, showing the orbits of planets around the sun.
Students used a tabletop planetarium to observe the phases of the moon and the positions of constellations.
03
an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
