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Earth orbit vs. changing mass of Sun

  1. Mar 22, 2004 #1
    What effect does the rate of decrease of mass of the Sun (-6 x 10^11 kg/s) have on Earth orbit? Will the orbit become significantly more elliptical over, say, a billion years? And if so, what effect would this have on climate?
  2. jcsd
  3. Mar 22, 2004 #2


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    Staff: Mentor

    Since the sun's mass is roughly 2x10^30 kg, it will lose roughly .07% of its mass in its lifetime. Not enough to make a noticeable difference.
  4. Mar 23, 2004 #3


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    Welcome to PF, Dorje!

    ...and then there's the 100 tons of meteoroids that enter the Earth's atmosphere each day...still only a millionth of a percent increase to the Earth's total mass over the next few billion years
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