noun

planetarium

planetarium

We went to the planetarium for a school trip.

We went to the planetarium for a school trip.

The planetarium showed a film about stars.

The planetarium showed a film about stars.

((a/the)) planetarium. We visited the local planetarium.

Synonyms: observatory (related, but different)

From 'planet' + '-arium' (a place for). It's like 'aquarium' (for aqua/water).

Think of it as a place for planets, like an 'aquarium for planets'.

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