A planetarium is a theatre built primarily for presenting educational and entertaining shows about astronomy and the night sky, or for training in celestial navigation.
Inside a planetarium projection hall. (Belgrade Planetarium, Serbia)
Inside the same hall during projection. (Belgrade Planetarium, Serbia)
The Mark I projector installed in the Deutsches Museum in 1923 was the world's first planetarium projector.
Opened in 1955, the Surveyor Germán Barbato Municipal Planetarium in Montevideo, Uruguay, is the oldest planetarium in Latin America and the southern hemisphere.
The night sky is the nighttime appearance of celestial objects like stars, planets, and the Moon, which are visible in a clear sky between sunset and sunrise, when the Sun is below the horizon.
Stars in the night sky
The Milky Way is brighter in the Southern Hemisphere than in the North. (Photo taken at La Silla Observatory)
Paranal Observatory nights. The concept of noctcaelador tackles the aesthetic perception of the night sky.
The Milky Way contains billions of stars, arranged in two strikingly different structures: halo and disc.