Scientists mapping Venus's surface with the European Space Agency's Venus Express orbiter recently received a shock when features on the planet's surface appeared to have moved up to 12.4 miles from where they were expected to be,reports National Geographic. The measurements, if correct, would seem to indicate that Venus' rotation has slowed by 6.5 minutes-- a dramatic decrease on a planetary level-- compared to when it was last measured just 16 years ago. That last measurement was taken..
Full article: Venus' spin is slowing down
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