And then there were 7 signs in the Sky, Q droplets of light.
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Synlight Solar System — The Largest Artificial Sun
Synlight® is the world’s largest artificial sun, a high-flux solar simulator built by Germany’s Deutsches Zentrum für Luft- und Raumfahrt (DLR) in Jülich, designed to mimic natural sunlight for industrial-scale testing DLR Portal.
What Synlight Is
Synlight is a 14×16 m wall of light made from 149 medium-sized cinema projector lamps, each emitting light with a spectrum similar to natural sunlight. When focused, the system can deliver up to 10,000 times more solar radiation intensity than on Earth’s surface DLR Portal.
Key Technical Features
Radiation output: Up to 400 kW total, distributed to up to three test chambers DLR Portal.
Multi-focus capability: Up to three objects can be irradiated simultaneously with customizable radiation distribution DLR Portal.
Max per chamber: 300 kW for a single test DLR Portal.
Three test chambers: Two are designed for solar chemical applications (e.g., hydrogen and fuel production), with adjoining rooms for gas scrubbing and cleaning DLR Portal.
Scalability: Chambers are up to 4 m high or wide, allowing large-scale systems like full-size solar thermal reactors or aerospace components to be tested DLR Portal.
Primary Applications
CO₂‑neutral hydrogen and fuel production: Testing solar-driven chemical processes such as water splitting and CO₂ reduction DLR Portal.
Solar thermal power plant components: Evaluating materials and systems under controlled, intense solar-like conditions DLR Portal.
Aerospace testing: Simulating space environments for materials and components DLR Portal.
Weather-independent testing: Experiments can be run year-round, regardless of seasonal or weather-related variations DLR Portal.
Why It’s Unique
Synlight’s ability to replicate full solar spectrum and intensity in a controlled environment makes it invaluable for:
Accelerating R&D in renewable energy technologies.
Validating industrial-scale prototypes before real-world deployment.
Providing consistent, repeatable test conditions for scientific and engineering research DLR Portal.
In short, Synlight is not a literal solar system but a powerful, man-made solar simulator that mimics the Sun’s light for cutting-edge research and development in clean energy and space technology. Wikipedia