Visualization of the Venus Express in orbit above Venus (Image: ESA)
The rotation of the planet Venus is slowing down, according to recent data gathered by the European Space Agency's Venus Express satellite. Peering through the planet's dense atmosphere with infrared imaging, the orbiter saw surface features up to 20 km (12.4 miles) from their expected location. The discrepancy could be explained if the Venusian day has lengthened by six and a half minutes since the planet's speed of rotation was established 16 years ago.
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