Anonymous
Anonymous asked in Science & MathematicsAstronomy & Space · 1 month ago

How do we know gravitational forces are constant throughout the universe if we can only test them in our solar system?

15 Answers

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  • Mr. P
    Lv 7
    1 month ago

    Nobody has quantified what gravity is yet, and we can't replicate it in a lab or create some or shield or direct it usefully. We just observe it as an effect and it seems to be constant on earth.

     All we can presume is that planets and moons made of less dense materials will have less of it, but then black holes come along which have a lot of it but seemingly more mass than is possible.

     Scientists tend to shy away from such tricky problems and propose ideas instead.

  • 1 month ago

    But... we *can* test them beyond our solar system... the way we find exo-planets depends on gravity to operate exactly as predicted in our solar system.  How minor galaxies orbit and interact with larger galaxies is another way.  Depending on the constant of gravity increases as mass does, led to the proposal of the existence of Dark Matter. 

  • 1 month ago

    There are 4 fundamental forces : weak nuclear , strong nuclear , electromagnetic and gravitational .  But in y2000, experts suggested 5th posible force : quintessance to explain the secret of Dark Energy !

    ... The 5th force,  also reffered as hyperchange and may propertize as Anti-Gravity !

    ... Hence it is always a debatable statement about Gravity and Constant and science is always ever evolving phenomena - till then current scientific research is mostly valid with exception !

  • 1 month ago

    Gravitational forces are NOT constant - they depend on the mass of the high-grav object that is warping space to cause that gravity.

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  • 1 month ago

    gravity forces vary thru out the universe , have you read einstin or modern theories .

    the universe is bent .

    and time isnt a dimention too .

  • Tom
    Lv 7
    1 month ago

    Its the Theory, and so far it has worked on everything we have tried it on.-----There is no real reason to think it works differently anywhere else.   Thats how Science works, once a theory is made and tested, we ASSUME it is TRUE until evidence to the contrary is found----and none has ben found yet.

     

  • 1 month ago

    They can be tested by observing binary stars and the rotation of distant galaxies, although in the latter case there does seem to be an anomaly which leads scientists to propose the existence of dark matter.  Nonetheless, there are also extragalactic binary stars, neutron stars and black holes, along with gravitational lensing, which enables these things to be tested.

  • 1 month ago

    The "law of gravity " appears to be "universal and  constant" -- but you're right to imply that it might differ, or not be applicable ,  under some circumstances .

    Most laws have bounds on them -- we just don't know what , or if ,there are any for gravity 

  • 1 month ago

    It’s based on the mass of an object. 

  • JJ
    Lv 7
    1 month ago

    Because it seems like it should be that way.

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