the great attractor

Discussion in 'Astronomy, Exobiology, & Cosmology' started by sculptor, Feb 16, 2023.

  1. geordief Valued Senior Member

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    2,143
    If we are just talking about one location the gravitational pulls of the sun and moon sum up to less when they do not pull in the same direction.

    I notice this on the tide chart

    https://tides4fishing.com/ie/connaught/clifden

    where I can see that the highest high tides occur when the moon is New and not so much (but still pretty high) when the moon is Full


    I assume the same pattern plays out in other locations around the globe.
     
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  3. DaveC426913 Valued Senior Member

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    Sorry, different to when the Moon is orthogonal (90 degrees) to the Sun. I was trying to clarify confusion I perceived in George's post.

    Full Moon and New Moon aren't significantly different.
     
    Last edited: Feb 21, 2023
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  5. sculptor Valued Senior Member

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    as/re the great attractor
    We do not know what it is, nor if it even exists as we might have imagined it
    Here is a take on the subject from phys.org
    https://phys.org/news/2016-05-great-attractor-milky.html

    OK
    If it does exist as we understand it, then it must be really massive to hurtle the milky way at 2.2-million kilometres an hour
    wow
    ok
    if gravity is pulling us toward the great attractor
    then
    is the great attractor being pulled toward us?
     
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  7. DaveC426913 Valued Senior Member

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    It is almost certainly a galactic supercluster.

    It's had a LONG time to accelerate to that speed.

    Of course.

    Just like the Earth is attracted to Newton's falling apple.

    BTW, the Great Attractor itself is being drawn towards an even more massive object - the Shapley Supercluster.
     
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