天文馆的英文：
planetarium

On his days off he takes them to the Museum of Natural History or the Planetarium.
他休假的日子，就带他们去自然历史博物馆或是天文馆。

A building or room containing a planetarium,with seats for an audience.
天文馆，天象放映馆装设天象仪并为观众准备椅子的建筑物或房间

The four - building complex will include a library,a museum,an auditorium and a planetarium.
由四栋房屋所构成的这座综合建筑将包括一个图书馆、一个博物馆、一个礼堂及一个天文馆。