planetarium
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planetarium
A building with a dome-shaped ceiling onto which an artificial starry sky is projected. It is used to visually present astronomical phenomena and to convey knowledge.
Im Planetarium haben wir bei einer Vorführung viel über die verschiedenen Sternbilder gelernt.
At the planetarium, we learned a lot about the different constellations during a presentation.
planetarium projector
The projector or technical device used to display the starry sky in a planetarium building.
Das Herzstück der Anlage ist ein hochmoderner Glasfaser-Projektor, das eigentliche Planetarium.
The heart of the system is a state-of-the-art fiber-optic projector, the actual planetarium.
The ending '-arium' comes from Latin and often refers to a place for something specific. Similar words are 'Aquarium' (aquarium, for aquatic creatures) or 'Terrarium' (terrarium, for land animals).
Das neue Vivarium der Stadt beherbergt ein Aquarium und ein Terrarium.
The city's new vivarium houses an aquarium and a terrarium.
To express movement, you use 'ins Planetarium' (to the planetarium; accusative). To describe a location or being there, you use 'im Planetarium' (in/at the planetarium; dative).
Am Wochenende gehen wir mit den Kindern ins Planetarium.
At the weekend, we are going to the planetarium with the children.
Common activities connected with a planetarium are: 'ein Planetarium besuchen' (to visit a planetarium), 'eine Vorführung ansehen' (to watch a presentation), or 'den Sternenhimmel beobachten' (to observe the starry sky).
Nächsten Monat besuchen wir das Planetarium in Hamburg.
Next month we are visiting the planetarium in Hamburg.
The meaning 'Projektor' (projector) is rare and very technical. You can recognize it when the sentence is about the technology, the machine, or the device itself, not about the building or a visit.
Die Wartung des alten Planetariums ist sehr teuer.
Maintaining the old planetarium projector is very expensive.
