* Astronomy

'Cling film' space telescope to image Sun

A space-based telescope that uses a thin plastic membrane as a lens is being developed by the United States Air Force.
Called a photon sieve, it works by bending light through billions of tiny holes in the "cling film" style optic.
The idea has been developed by the US Air Force Academy, and it hopes to launch a 20cm diameter telescope inside a tiny satellite called FalconSAT-7 in 2015.
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