Engineers recently shut down one of the Hubble Space Telescope’s three operational gyroscopes in an effort to preserve the operating life of the third gyro, thereby pushing Hubble’s science observations into mid-2008.

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Leonard David has been reporting on space activities for nearly 50 years. He is the 2010 winner of the prestigious National Space Club Press Award and recently co-authored with Apollo 11’s Buzz Aldrin the book “Mission to Mars — My Vision for Space...