[Calin]

"According to our current 'understanding' of gravity, over the last 34 years both Pioneer 10 and 11 should have traveled more that 400,000 kilometers further than they have actually flown."

"The effect that concerns NASA scientists is the distance calculations for both probes. Each appears to be off course by several hundred thousand kilometers and no one can quite figure out why."
http://www.thunderbolts.info/tpod/20...eeranomaly.htm