noun
- plural of planetarium; buildings or rooms containing devices that project images of stars and planets onto a domed ceiling
Examples
- The city has built three new planetaria in the past decade.
- Many planetaria offer educational programs for school groups.
- Digital planetaria can display more realistic star fields than older models.
- The conference brought together directors from planetaria across the country.
- Modern planetaria use advanced projection systems to simulate space travel.
- Several planetaria are hosting special shows about the solar eclipse.