Geodesic Planetarium

The Geodesic Planetarium is a groundbreaking architectural project located in the heart of Saint Petersburg, Russia. It represents a visionary transformation of an industrial area into a modern scientific and educational center. At the core of this project lies the world's largest planetarium, which is ingeniously housed within a historic gasholder tower. This remarkable blend of modern architecture with historical significance creates a unique atmosphere for visitors and scholars alike.

Constructed in 1884 by the notable architect Rudolf Bernhard, the gasholder tower stands as an architectural monument with a diameter of 42 meters and a height of 20 meters. This impressive structure, with a total volume of 40,000 cubic meters, served the City Lighting Society of St. Petersburg and remained abandoned for over a century until its reconstruction began in 2015. By November 2017, the planetarium was open to the public, offering a glimpse into the cosmos through its state-of-the-art facilities.

The geodesic dome of the planetarium is a feat of engineering, built with LVL beams and innovative steel connectors known as 'Haeckel'. This distinctive design, inspired by natural forms, ensures structural integrity while maintaining an aesthetic appeal. The dome's framework comprises 1,500 beams and 507 connectors, weighing a total of 20 tons. The dome's unique 10-frequency sphere dictates the materials used, featuring foamed PVC for optimal projection and durability.

To create a captivating visual experience, the engineers faced the challenge of assembling a central projection sphere that accommodates 39 projectors, designed to provide uniform illumination across the immense screen. The design process utilized advanced CAD simulations to ensure the structural integrity of the projection pyramid while managing heat generated by the projectors. This meticulous attention to detail underscores the commitment to innovation and excellence in the construction of the planetarium.

The Geodesic Planetarium serves as more than just an entertainment venue; it is a dynamic space that can adapt to various events and exhibitions. With the ability to create custom visual narratives for a range of programs, the planetarium is poised to become a cultural landmark in Saint Petersburg. Its innovative design and multifunctional capabilities make it a beacon of knowledge, creativity, and exploration, inspiring future generations to look towards the stars.

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