February 4, 1993 (13 ���� the first month), Russia successfully the experiment space ytterbium. mirror


space in orbit the Earth
February 1993, Russia Sri Lanka astronauts in "peace" orbital station successfully conducted the first human experiments, a space mirror (also known as sun umbrellas ) reflection of the sun to the earth in some areas. 3:45, leaving the "peace" orbital station "Progress spacecraft carrying space mirror. When the spacecraft flew to an altitude of over 350 kilometers, the space mirror made of aluminized plastic film is fixed the spacecraft head mooring ring roll on. Under the effect of centrifugal force, space mirror slowly opened to form a diameter of 20 meters, the reflective disc. The space mirror flying around the Earth, reflecting sunlight to the time at night in parts of Europe, Lyon, Geneva and Munich and other cities are reflective light to illuminate. The experiment was a success, the human person is the lighting and new breakthroughs in energy use, and people for the very circle of towns and natural disaster area lighting available space mirror.