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WSJ.com - Newton, Einstein Lost in Space?

online.wsj.com — Astrophysicists believe they are on the verge of solving a mystery that might have confounded Newton and Einstein: why two of America's oldest space probes have drifted a quarter of a million miles off course.

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  • majordanger, on 05/16/2008, -0/+1I have followed this story for years and have heard , "Slowing down" , "off course", and "additional thrust from uneven solar heating".
    But I still do not understand exactly what these probes are doing different than Newton predicted.
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