If you fire the thing up an the satellite's orbit changes, that's kind of a hard measurement to screw up. Caution: a re-reading of the Pioneer Anomaly is in or

If you fire the thing up an the satellite's orbit changes, that's kind of a hard measurement to screw up. Caution: a re-reading of the Pioneer Anomaly is in order before you start assuming things in microgravity move because of new physics ...