Risks in Space from Orbiting Debris

  title={Risks in Space from Orbiting Debris},
  author={J.-c. Liou and Nicholas L Johnson},
  pages={340 - 341}
340 C R E D IT : (T O P ) N A S A S ince the launch of Sputnik I, space activities have created an orbital debris environment that poses increasing impact risks to existing space systems, including human space flight and robotic missions (1, 2). Currently, more than 9000 Earth-orbiting man-made objects (including many breakup fragments), with a combined mass exceeding 5 million kg, are tracked by the U.S. Space Surveillance Network and maintained in the U.S. satellite catalog (3–5). Three… 

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