Before the launch of the new Soyuz, its panels were opened and illuminated with powerful spotlights: for what purpose was this done?

Preparations for the launch of the Soyuz MS-27 manned spacecraft are actively underway at the Baikonur Cosmodrome. Roscosmos specialists have completed a significant stage of testing: the ship's solar panels were unfolded and exposed to powerful light sources. This test allowed them to evaluate the efficiency of converting solar energy into electricity. Photo by RSC Energia At the same time, the installation of the necessary equipment and facili…