How Russian scientists wanted to illuminate the Earth from space

For six minutes, a huge (it reached five kilometers in diameter) light spot moved over Lyon, Bern, Munich, Prague, Lodz, Brest and Gomel. Although the weather was cloudy, flashes of light were noticeable. And meteorologists, after studying their brightness, concluded that they were comparable to a full moon.

'Znamya' ('The Banner') came about as a response to a contest for the 500th anniversary of Columbus' disc