11m 55s

Planetariums

Japan's Top Inventions

Broadcast on March 2, 2022 Available until March 16, 2023

The behind-the-scenes tales of hit products and creations from Japan: this is Japan’s Top Inventions. This time, planetariums, which realistically reproduce the look of the starry night sky. In 2014, a Japanese firm succeeded in creating a planetarium projector that displays each of the approximately 9,500 stars visible to the naked eye in incredible detail, including accurate coloring. We dive into the story behind the creation of that top invention.

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The world’s first planetarium to display approx. 9,500 stars with colors
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Developer Kasahara Makoto
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A star field plate displays stars when a light is shone through it.
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The star field projected by the planetarium

Program Outline