Largest mirror in space
The current largest mirror in space record is 21′ 3.9″, held by James Webb Space Telescope, set on December 25, 2021. Last checked October 9, 2026.
21′ 3.9″
James Webb Space Telescope
- Holder
- James Webb Space Telescope
- Record
- 21′ 3.9″
- Metric
- 6.5 m
- Exact figure
- 6.5 m gold-coated beryllium mirror (18 segments)
- Location
- Sun-Earth L2, 1.5 million km from Earth
- Date set
- December 25, 2021
- Recognized by
- NASA, ESA, CSA
- Last checked
- October 9, 2026
Sources
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