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Newswire : History lesson

点击量:   时间:2017-05-18 07:01:02

Two satellites named after Meriwether Lewis and William Clark, the 19th-century explorers who opened up the American West, have followed their namesakes into the history books. NASA has cancelled the Clark Earth Science Mission, writing off a $55-million investment. The Lewis satellite spiralled out of control after its launch (This Week, 6 September 1997, p 7) The Clark satellite would have studied pollution and urbanisation. NASA officials say that launch delays and escalating costs forced the cancellation. “NASA was well within its rights to terminate,” concedes Barron Beneski, a spokesman for Orbital Sciences,