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              ウィキペディアからヨシダが選んだ 2月10日のできごと
 February 10:USA and Russia communications satellites collide in orbit

Wikipedia(English edition)(February 10:"2009–The communications  satellites Iridium 33 and Kosmos 2251 collide in orbit, destroying both."
U.S., Russian satellites collide in space-REUTERS"
Hypervelocity-Wikipedia"       "2009 satellite collision-Wikipedia"   
2009 satellite collision-Images"        "Hypervelocity-Images"
The 41-8-line-photo-attached file/327.53KB/40.9KB/line)

   Image result for February 10, 2009Image result for usa flagImage result for Iridium 33Image result for russia flagImage result for Kosmos-2251
  Image result for accidentally wordImage result for collided wordImage result for collision wordImage result for at speedImage result for 11,700 metre per second
  Image result for altitudeImage result for altitude wordImage result for 789 kilometres (490 mi)Image result for taymyr peninsula locationImage result for above the Taymyr Peninsula in Siberia.Image result for above the Taymyr Peninsula in Siberia.
    Image result for first timeImage result for wikipediaHypervelocityImage result for hypervelocityImage result for hypervelocityImage result for occured wordImage result for happened
  Image result for betweenImage result for imagination wordImage result for two satellitesImage result for two satellites
  Image result for recalcitrantImage result for until thenImage result for a satellite and a piece of space debris collusionImage result for a satellite and a piece of space debris collusionImage result for debris word
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On February 10, 2009, two communications satellites—the active commercial Iridium 33 and the derelict Russian military Kosmos-2251—accidentally collided at a speed of 11,700 m/s (26,000 mph; 42,000 km/h) and an altitude of 789 kilometres (490 mi) above the Taymyr Peninsula in Siberia.[1][2][3] [4][5][6] It was the first time a hypervelocity collision occurred between two satellites – until then, all accidental hypervelocity collisions had involved a satellite and a piece of space debris.(Wikipedia)

February 10  

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