Roll-up ‘membrane mirrors’ could pave the way for bigger, more powerful space telescopes

A scientist says it might be possible to create low-cost foldable telescope mirrors that are more than twice as large as those aboard the James Webb Space Telescope (JWST), including the iconic golden honeycomb mirror giant is the largest ever sent into space.

JWSTnetwork of 18 golden segments make up a primary mirror 21 feet 4 inches (6.5 meters) in diameter. Now, a scientist has come up with a new method to produce extremely large telescope mirrors that he says will be thinner, lighter and more affordable than most optics currently in orbit.

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