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Space 'taxis' could cut the cost of spaceflight

Space 'taxis' could cut the cost of spaceflight

作者:武胙  时间:2019-03-02 05:01:10  人气:

By David Shiga IN 1982, an Australian spy plane snapped photographs of a miniature space shuttle being fished out of the Indian Ocean by a Soviet ship. The craft turned out to be a BOR-4, which the Russians were testing as part of their short-lived space shuttle programme. So intrigued was NASA by the photographs that it developed its own mini-shuttle, the HL-20 – intended as a possible astronaut rescue vehicle until the project’s funding was cut in the early 1990s. But a modified version of the HL-20, called Dream Chaser, could yet reach the final frontier,