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While today Venus is a very inhospitable place with surface temperatures hot enough to melt lead, geological evidence, supported by computer model simulations, indicate it may have been much cooler billions of years ago and had an ocean, and so have been very similar to Earth.
It is not only the temperature and highly corrosive atmosphere of the present day Venus that makes it different from the Earth. Venus also rotates very slowly, taking 243 Earth days to complete a Venusian day. However, billions of years in the past it may have spun faster, which would have helped make the planet more habitable.
Tides - Act - Planets - Rotation - Rate
Tides act to brake a planets rotation rate because of friction between the tidal currents and the sea floor. On Earth today, this braking changes the length of a day by about 20 seconds per million years. A...
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