Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Venus' rotation around sun

  1. Jan 18, 2016 #1
    Why do venus take more number of days for one complete rotation around sun than earth when the gravitational pull towards venus is higher than earth ?
  2. jcsd
  3. Jan 18, 2016 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    It doesn't. Google is your friend.
  4. Jan 18, 2016 #3
    It doesn't. Venus takes approximately 225 Earth days to complete one orbit.
  5. Jan 18, 2016 #4
    Maybe you're thinking about the rotation of Venus as opposed to the orbit of Venus? Venus spins on its axis very slowly, so it only makes a full axial rotation ever 243 Earth-days, but in this time period it has already made a full orbiting loop around the Sun and is about 8% of the way into the next loop.
  6. Jan 18, 2016 #5


    User Avatar

    Staff: Mentor

    Probably a definition issue:
    Rotation: spinning about its axis
    Revolution: moving around the sun
  7. Jan 18, 2016 #6


    User Avatar
    Science Advisor
    Gold Member

    Perhaps you're thinking of a synodic year. Venus takes about 1.6 years to complete a cycle as seen from Earth. After it completes one orbit, it still has to travel an extra distance to catch up to Earth, which has also moved. So from one apparition as an evening star to the next it takes 1.6 years.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook