planetarium

• Bâtiment ou salle doté d'un plafond en forme de dôme sur lequel sont projetées des images d'étoiles, de planètes et d'autres corps célestes, ou appareil optique utilisé pour de telles projections.

A building or room with a domed ceiling onto which images of stars, planets, and other celestial bodies are projected, or an optical device used for such projections.

1. Building for astronomical projectionB1formalscientific

   A building or room that contains a special projector to display images of stars, planets, and other celestial objects on a large domed ceiling.

   Planétarium

   • The school took a field trip to the planetarium to learn about constellations.
   • The planetarium's new laser show is very popular with visitors.
   • She works as a guide at the local planetarium.

2. Optical projection deviceB2formalscientific

   An optical device that projects images of celestial bodies and astronomical events onto the inner surface of a hemispherical dome.

   Planétarium (projecteur)

   • The planetarium projector can simulate the night sky from any location on Earth.
   • Modern planetariums use digital projectors for high-definition shows.
   • The technician calibrated the planetarium's optical system.

3. Model of the solar systemB2formalscientific

   A model or apparatus that represents the positions and movements of the planets in the solar system.

   Planétarium (maquette du système solaire)

   • The antique planetarium in the museum shows the orbits of the planets.
   • He built a small planetarium for his science project.
   • The planetarium model accurately depicts the relative sizes of the planets.

   Synonymesorrery