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Archive for March, 2002


14-Mar-02 | Mars Odyssey’s MARIE online

Yesterday, controllers for 2001 Mars Odyssey announced that they successfully regained communications with MARIE, the Martian Radiation Environment instrument, and have begun collecting data with it. MARIE had been off line since August, when communications were first lost; mission managers chose to leave the instrument turned off and to postpone diagnosis until they had completed the tricky phases of orbit insertion and aerobraking.


06-Mar-02 | FUSE back in action

FUSE, the Far Ultraviolet Spectroscopic Explorer (Delta 271) has returned to active duty. Controllers have implemented an innovative method of guidance control that uses three magnetic torquer coils and their interaction with Earth’s magnetic field to accurately point the spacecraft and provide full three-axis stabilization. This system compensates for the loss of the second of FUSE’s four reaction wheels, which shut down on 10 December 2001. Since then, the spacecraft had been all but given up for dead, but this week’s miraculous engineering feat will allow FUSE to complete its primary one-year mission plus a possible two-year extension. (NASA Press Release, 06-Mar-02)


     

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