Scientists have been trying to understand why the Pioneer 10 and 11 space probes appear to be decelerating and a new theory could have a profound impact on calculations of space travel across our galaxy and eventually the universe.
Source: io9
The Pioneer spacecrafts aren't slowing down — they're moving exactly as the physical laws would predict. But because space is expanding, and because the Pioneer probes are so faraway,we've been getting the false sense that they're slowing down. Physicists,it now appears, haven't been plugging in all the relevant variables into their calculations.
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