hayabusa危险了。。。# Aviation - 航空航天
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Troubled Asteroid Mission Stumbles on Road Home
By Stephen Clark
posted: 10 November 2009
12:45 pm ET
Hopes are fading for the return of the Hayabusa space probe after another of
its ion thrusters failed last week, leaving just one already-damaged engine
to guide the hard-luck spacecraft back to Earth, potentially with the first
precious samples of an asteroid.
Hayabusa's four experimental microwave discharge ion engines consume xenon
gas and expel the ionized propellant at high speeds to produc
By Stephen Clark
posted: 10 November 2009
12:45 pm ET
Hopes are fading for the return of the Hayabusa space probe after another of
its ion thrusters failed last week, leaving just one already-damaged engine
to guide the hard-luck spacecraft back to Earth, potentially with the first
precious samples of an asteroid.
Hayabusa's four experimental microwave discharge ion engines consume xenon
gas and expel the ionized propellant at high speeds to produc