Powered by Cosm Technology
Location
Prague, Czech Republic
Date
2025
Project Type
Planetarium
Dome/Screen Size
22m
Resolution
8K+
Prague Planetarium is ushering in a new era of immersive education and cultural engagement with the debut of Europe’s first LED dome, powered by Cosm’s CX System. In partnership with Cosm, the institution has completed a transformative renovation that will redefine the planetarium experience for audiences in the Czech Republic and beyond.
Over its 65-year history, Prague Planetarium has inspired millions of visitors. Today, it embraces next-generation immersive technologies, including a high-resolution LED dome display, advanced Digistar planetarium software, and a robust content ecosystem, to deliver unprecedented visual clarity, brightness, and depth. With an extended 22-meter, 8K+ LED dome and a powerful suite of immersive software, the planetarium has evolved into one of the world’s most technologically advanced science and culture destinations.
As the world’s most advanced planetarium, this transformation positions Prague Planetarium as a global benchmark for immersive science storytelling.
Prague Planetarium, located in the heart of the Czech Republic, is one of the largest and most respected planetariums globally. Since its opening in 1960, it has welcomed more than 250,000 visitors annually and served as a foundational institution for astronomy education and scientific exploration.
In 2018, a new leadership team began to reimagine the planetarium’s role, modernizing its programming and nearly doubling visitor attendance in two years. Yet the facility’s aging projection system could no longer support its growing ambitions, sparking a full-scale renovation that marks the largest transformation in the institution’s 65-year history.
Harnessing Cosm's LED Dome Solution
Prague Planetarium’s projection system had reached the end of its useful life just as audience expectations for immersion and realism were accelerating. The institution required a solution that could not only match the increasing demand for quality and innovation but also redefine what a modern planetarium could be.
With a long-term vision in place, the leadership team sought a partner that could bring that vision to life, whose technology could meet the stringent performance standards set by an international evaluation committee.
.webp)
After a year-long selection process, Prague Planetarium selected Cosm as its official technology partner to power the reimagined planetarium. Meeting the strict requirements of the international evaluation commission, Cosm’s CX System LED dome solution offers a transformational leap forward and provides the creative and operational flexibility the planetarium needed.
Key Features:
- Extended 22-meter CX System LED dome, the first in Europe and largest in any planetarium worldwide
- 8K+ resolution and 45+ million pixels for unmatched visual fidelity
- A true black LED dome surface that enhances contrast, depth, and dimensionality, while eliminating cross-reflection
- Increased brightness, outputting more than 100x the brightness of most projection domes
- Digistar, the world’s most advanced planetarium software
- Integration with Unreal Engine for, custom, in-house productions
- Industry-leading calibration and blending capable of addressing each LED for seamless, uniform, visuals across the dome
Cosm’s Chief Operations Officer Kirk Johnson celebrates, “The leaders at Prague Planetarium, who are knowledgeable and well-informed about the leading-edge LED dome solution for planetariums of the future, insisted on delivering the best possible experience for their guests and pursued a technology solution that could achieve the premium experience they hoped for. By leveraging Cosm’s CX System, the institution's forward-thinking team will draw on their technical ability and creative talent to deliver entirely innovative and compelling guest experiences.”
A COMPLETE TRANSFORMATION
“After a long and careful selection process, during which we tried to get as much information as possible, the company Cosm finally won. Their technology met the strict requirements of the international evaluation commission – and we’re proud that the world’s highest quality display system is now home to Prague Planetarium, the first and only planetarium powered by this best-in-class technology.”
Jakub Rozehnal
Director, Prague Observatory and Planetarium
While the full visitor experience will launch with the reopening in June 2025, the transformation already signals a dramatic leap in capacity, innovation, and relevance. Prague Planetarium is ushering in a new era for planetarium experiences, leveraging CX System to:
- Unlock versatile programming, including lectures, multidisciplinary presentations, live dome casts, and more
- Expand access to immersive blockbusters through collaborations with top international production studios
- Create content in-house, particularly for educational and entertainment offerings
- Deliver interactive and customizable immersive experiences tailored to different age groups and families
- Take guests on fully immersive journeys - from outer space to the depths of the ocean, and even inside the human body
“Visitors can now experience the highest level of immersion that transforms how they connect with the universe,” Rozehnal said. “The LED dome’s scale, clarity, and realism create a sense of presence that draws people into each story, deepening how we communicate complex ideas and how audiences engage with them.”
With a mission to make the planetarium a premier hub for scientific exploration that intersects culture, science, and entertainment, Prague Planetarium is well-positioned to meet its ambitions by leveraging Cosm’s CX System to foster and expand its audience. With the new CX System LED dome in place, the team plans to engage:
- Domestic and international audiences
- Foreign tourists and colleagues in the immersive space
- A new generation of learners and creators
Public excitement is growing, and the institution is already positioning itself as a lighthouse for immersive education in Europe. For Cosm, Prague Planetarium complements its other landmark LED installation including, Fort Worth Museum of Science and History’s Omni Theater, and Arizona Science Center’s reimagined Dorrance Planetarium, demonstrating that immersive LED technology is redefining the next generation of planetariums and science centers worldwide.