The wheels in the sky...
"The motor spin rates are controlled electronically by computer and are essential for altering spacecraft orientation by very small amounts, as needed for keeping the Kepler telescope pointed precisely at its designated sky target area." They've also been rolling Kepler 90 degrees every three months to keep the solar panels pointed at the sun.
May 19, 2013 12:01 AM PDT
Photo by: Ball Aerospace & Technologies
| Caption by: Edward Moyer
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