[unable to retrieve full-text content]In the early 1970s, Mrs. Brill invented a propulsion system to help keep communications satellites from slipping out of their orbits.
Source: http://www.nytimes.com/2013/03/31/science/space/yvonne-brill-rocket-scientist-dies-at-88.html?partner=rss&emc=rss
zynga Tropical Storm Sandy W S B H c
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