Space mirror. View from the Mir space station showing the Progress M-15 supply module deploying the Znamya 2 space mirror experiment. Znamya 2 was a 20-metre wide flexible mirror, designed to reflect sunlight down to Earth. It was part of a larger project ultimately intended to artificially extend daylight in key regions of Russia. Progress M-15 was an unmanned supply vehicle launched on 27 October 1992. Znamya 2 was deployed just after Progress M-15 left Mir on 4 February 1993 and was released and de-orbited after a few hours.
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