Space Garbage by NASA Orbital Debris Program: After decades of space exploration, there are now more than 500,000 pieces of artificial debris greater than half an inch in size. #Garbage #Space_Garbage #NASA

Space Garbage by NASA Orbital Debris Program: After decades of space exploration, there are now more than 500,000 pieces of artificial debris greater than half an inch in size. #Garbage #Space_Garbage #NASA

Sunlight on the poster, illuminating the Challenger's exhaust.  Perfectly placed!

Sunlight on the poster, illuminating the Challenger's exhaust. Perfectly placed!

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