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

Planet movement

  1. May 30, 2009 #1
    Just a quick question
    Are the planets totaly locked in there orbits forever or do they slowly get drawn in closer to the sun?either by the sun's gravitational pull or simply by the sun expanding?
    Thanks in advance for any replys
    mike
     
  2. jcsd
  3. May 30, 2009 #2

    Janus

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Given that the Sun is slowly losing mass as it burns it fuel, the planets will slowly move away from the Sun.
    In a few billion years the Sun will then expand into a red giant, engulfing the inner planets.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Planet movement
  1. Physics of movement (Replies: 6)

  2. Earth's movement (Replies: 13)

  3. Earth movement (Replies: 5)

  4. Uranus Movements (Replies: 2)

Loading...