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What is Venus's gravitational pull? A: According to NASA, the surface gravitational pull on Venus is 9.5 meters per second squared, or 31 feet per second squared. The gravitational constant, G, is based on Earth's gravity and is equal to 1 on Earth, but because Venus has less gravity, G is equal to .88 on Venus.
Venus itself rotates only once every 243 Earth days. Surface pressures on Venus are around 95,000 millibars. (By contrast, Earth has a sea-level pressure of around 1,000 millibars.) Mars, in contrast, has a thin atmosphere composed of about 95 percent carbon dioxide, with the remainder being mostly diatomic nitrogen. Traces of water vapour also occur. Mars has a mean surface air temperature estimated at 210 K (â63 Â°C, or â82 Â°F), and surface pressures hover near 6 millibars.