Gávea Planetary, Planetarium in Gávea, Brazil

Gávea Planetarium is a stargazing facility in Rio de Janeiro featuring multiple theater spaces and a 23-meter dome where sky shows are projected. The complex also includes a museum with interactive exhibits about astronomy and libraries with subject materials.

The facility opened in 1970 under the original name Planetário do Rio and was renamed in 1993. This change marked a transition in its role as a center for astronomy education in the city.

The name Planetário do Rio refers to the whole institution, not to Giordano Bruno, who is honoured only by the Biblioteca Giordano Bruno, holding about 2,500 books. A second library, the Biblioteca Écio Salles, keeps 1,000 books on Rio de Janeiro. Sessions in the domes serve booked schools from Tuesday to Friday and the general public on weekends and holidays.

The planetarium sits at Rua Vice-Governador Rubens Berardo 100 in Gávea and opens Tuesday to Sunday, 10:00 to 17:00. Dome sessions on Tuesday to Friday are reserved for schools booking in advance; on weekends and holidays they open to the general public. Telescope observing on the Praça dos Telescópios normally takes place on Wednesdays, free of charge, though works at the Gávea site have reduced it to once a month.

The interactive astronomy museum is called Museu do Universo, not Cosmic Museum; the Museu Cósmico opened in 2008 in Santa Cruz, a separate unit of the same foundation. The Gávea site also has the Carl Sagan dome, 23 m wide with 263 seats, and the Galileu Galilei dome, 12.5 m with 90 seats.