Venus completes one rotation on its axis every 243 days – that’s longer than Venus’ year! Because Venus’s spin axis is tilted only about 3° toward the plane of its orbit, the planet does not have appreciable seasons. Because of its slow rotation period, Venus: presents the same side to Earth at each closest approach. They focused on super-rotation in the cloud layer of Venus, where the rotation speed is highest, reaching about 245 mph (395 km/h) in the region surrounding the equator." So in essence, it was just a question of time before Venus … The period of rotation of Venus is 243 Earth days, which is longer than the 225 days it takes the planet to orbit the sun. Venus Observational Parameters Discoverer: Unknown Discovery Date: Prehistoric Distance from Earth Minimum (10 6 km) 38.2 Maximum (10 6 km) 261.0 Apparent diameter from Earth Maximum (seconds of arc) 66.0 Minimum (seconds of arc) 9.7 Maximum visual magnitude -4.8 Mean values at inferior conjunction with Earth Distance from Earth (10 6 km) 41.44 Apparent diameter (seconds of arc) 60.2 It changed to the current rotation period because of tidal effects and planetary perturbations on its atmosphere. True False Answer Key: False Question 11 of 15 1.0 Points Scientists have long theorized the existence of water ice in Mars' soil, but we have yet to directly measure any. Venus also has the longest rotation period of any planet in the Solar System, lasting 243 Earth days. I … 7 Earth days. Because of this slow rotation, Venus’ magnetic field is weaker than the one we have here on Earth. Also, Venus’s rotational period slowed by 6.5 minutes between two sets of measurements taken in 1990–92 and 2006–08. Venus may have formed from the solar nebula with a different rotation period and obliquity, reaching its current state because of chaotic spin changes caused by planetary perturbations and tidal effects on its dense atmosphere, a change that would have occurred over the course of billions of years. Its period of revolution is 224. On Venus, the sun rises in the west and sets in the east. The revolution period is the length of a year in Earth days on Venus. Astronomers perceived small details in Venus’ atmosphere that implied that the clouds rotated in about 4 days, in the opposite direction to Venus’ orbital direction. about 3.5 years. Venus is only a little bit (5%) smaller than Earth, and its density is only slightly less than Earth's. Therefore, its mass is: Venus takes 242 earth days to rotate on its axis, so a day on Venus is about 242 Earth days. When Venus was first formed it may have had a different obliquity and rotation period. The synodic period of Venus is about how many Earth years? The rotation period of Venus cannot be decided through telescopic observations of its surface markings because its featureless thick atmosphere makes this impossible. Therefore, a single year on Venus is made up of 1.92 Venus solar days, meaning in one Venus year, the planet will have experienced only two sunrises/ sunsets. Venus' period of rotation is 243 Earth days. True False Answer Key: True Question 10 of 15 1.0 Points Venus' atmospheric pressure is almost 1000 times higher than Earth's. Moreover, the rotation is in the opposite direction from other planets in the solar system. Answer Key: B Question 9 of 15 1.0 Points Venus' rotation period is longer than 1/2 a year on Earth. The rotational period of Venus on its own axis was unknown for a long time. 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