Changes

The '''Pioneer anomaly''' refers to deviations in projected courses for several spacecraft sent to the outer solar system.  The effect is believed to have influenced the courses of both Pioneer spacecraft, Galileo, and Ulysses.  The courses for the Voyager spacecraft and Cassini were not able to be predicted accurately due to known but unpredictable effects on these craft, and if the anomaly affects these spacecraft, it would not be distinguishable from other effects.

The '''Pioneer anomaly''' refers to deviations in projected courses for several spacecraft sent to the outer solar system.  The effect is believed to have influenced the courses of both Pioneer spacecraft, Galileo, and Ulysses.  The courses for the Voyager spacecraft and Cassini were not able to be predicted accurately due to known but unpredictable effects on these craft, and if the anomaly affects these spacecraft, it would not be distinguishable from other effects.

Critics of [[General relativity|general relativity]] cite the Pioneer anomaly as an error in the theory.

Critics of [[General relativity|general relativity]] cite the Pioneer anomaly as evidence that the theory is in error.

==Discovery==

==Discovery==