Satellite reprieved

 作者:权郑锔     |      日期:2019-03-07 05:08:19
NASA’s ailing Compton Gamma-Ray Observatory has won a stay of execution. After one of three gyroscopes on the 17-tonne satellite failed late last year, NASA considered scuttling it over the South Pacific in case a second gyro failed and sent it plunging into the atmosphere. Now engineers think they can control Compton’s descent without any gyros, giving the satellite several years more observing time. A review panel says the technique is feasible, but needs more study,