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Innenansicht Planetarium, Foto: MHK, Arno Hensmanns


Hessen's largest planetarium, housed in the Apollo-Saal of the Orangery palace, features a dome 10 m in diameter that opens up a breathtaking view of the starry sky. At the core of the facility is a state-of-the-art hybrid projection system acquired in 2016, consisting of a star projector, the Skymaster ZKP 4, and the Velvet Duo digital full-dome system. Both systems were developed by the well-known manufacturer Carl Zeiss of Jena, and are thus »Made in Germany«.

The planetarium has been offering a wide range of shows since April 1992. Most of them are presented live. As well as the sheer fascination with the starry sky, the focus is on an age-appropriate presentation of astronomical (and other scientific) phenomena and on enabling visitors to take fresh insights and a new appreciation home with them.

It is no coincidence that the planetarium is part of the Cabinet of Astronomy and Physics. One of the highlights of the collection is a 16th-century astronomical clock. Even then, it was possible to check the relative positions of the sun, the moon, and the planets at will. The clock is among the earliest, and technologically most sophisticated, efforts in the world to create a faithful representation of the planetary orbits, and is considered the predecessor of today's planetariums. 

Given this unique tradition, it seemed like a fairly obvious decision in 1992 to establish Hesse's chief planetarium in the same location. A ticket for the planetarium will also buy you the option to see this technological masterpiece for yourself, as well as numerous other exhibits from the Golden Age of scientific revolution. The Collection is an important, internationally renowned specialist museum of scientific instruments and clocks occupying 1200 qm of exhibition space.