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Thread: SWaB: "this was the time of Oumuamua's life"

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    Default SWaB: "this was the time of Oumuamua's life"



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    Default Re: SWaB: "this was the time of Oumuamua's life"

    Interesting article. I did not know that ‘Oumuamua passed so close to the Sun.
    Question: What prevented ‘Oumuamua from being drawn into the Sun's gravitational field and impacting the Sun?
    - Rick
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    Default Re: SWaB: "this was the time of Oumuamua's life"

    Quote Originally Posted by rickg18704 View Post
    Interesting article. I did not know that ‘Oumuamua passed so close to the Sun.
    Question: What prevented ‘Oumuamua from being drawn into the Sun's gravitational field and impacting the Sun?
    High angular momentum does the trick. The gravitational potential energy is proportional to 1/r (so the force is inverse r squared) and attractive. But determining the radius the object can get to needs including the "effective" potential energy due to angular momentum conservation. THAT is proportional to 1/r^2 (so the force is inverse r cubed) and repulsive. It's what keeps all the planets in their orbits not getting swallowed by the Sun.

    https://en.wikipedia.org/wiki/Effect...onal_potential
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    Default Re: SWaB: "this was the time of Oumuamua's life"

    But it was good throw Bullseye ;-)
    Greg

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    Default Re: SWaB: "this was the time of Oumuamua's life"

    Thanks nFA. It makes sense now.
    - Rick
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