Space Debris Feature Summary
- From Physics Research
- Before October 4, 1957, when Sputnik was launched, space above Earth was pristine. But now...take a look at the image above (larger version). The green dots show satellites in low Earth orbit in January, 2007. The red dots show debris pieces bigger than 5 cm across from China's 11 January 2007 demolition of its weather satellite in an anti-satellite missile test. To learn more, visit the Wikipedia site Space Debris.
(This feature was updated on July 28, 2011.)
- Reprinted with permission from "Back Scatter," Physics Today, March 2007, page 100. Analysis and images, generated with the STK software package, courtesy of CSSI. Object sizes magnified for visibility. larger version
- Image URL:
- March 1, 2008 - March 16, 2008