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Race against time to save orbiting observatory

Race against time to save orbiting observatory

作者:元瞟彦  时间:2019-03-07 07:20:01  人气:

By Jeff Hecht in Boston ASTRONOMERS have just over two weeks to stop NASA from crashing the Compton Gamma Ray Observatory into the Pacific. They say the satellite should be good for five or more years, but NASA has given them only until 16 February to make a case that it can be kept safely aloft. NASA’s plan to scuttle Compton in March follows the failure of one of the observatory’s gyroscopes. If a second gyro fails, engineers may not be able to control its eventual descent. And that would risk spraying an inhabited area with debris (New Scientist,