Gravitational force is never truly zero. If it has mass, it is pulling at you, though it may be so close to zero that you don’t realize it.

  • @radix@lemmy.world
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    361 year ago

    Any given star is constantly emitting an unimaginably large, but finite, number of photons. A tiny few of them travel tens to hundreds of (Earth) years, only to end their journey in your eyeballs.

    • @NOT_RICK@lemmy.world
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      121 year ago

      Even crazier when you consider how long that photon bounced around inside the star before escaping out into space

    • JilanicoOP
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      21 year ago

      And from the photon’s perspective, it all happened in an instant 🤯

    • Enkrod
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      1 year ago

      Actually tru for every value of yo mama, from xs to xxxxxxxxxl

  • Nephele Konstantatou
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    61 year ago

    While that’s technically true, it’s good to note that this doesn’t excuse astrology, which is based on the false fact that the gravity of celestial bodies influences our decisions in everyday life. The gravity of you Karen influences my “daily life” more than these celestial bodies and especially your belief in astrology. 😄

    • @Dasus@lemmy.world
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      71 year ago

      While you are affected by gravity, it’d have less of an effect than other things.

      For instance we can scientifically show your birth date does influence your personality, as long as you don’t live on the equator.

      The further North/South you go, the more pronounced the effect becomes.

      That is to say that from large samplings, you can see that extroverted traits are more common with babies born in Spring (in the Northern hemisphere), while introversion is more associated with being born in autumn.

      That ofc doesn’t mean that a person who was born in November will automatically be less extroverted than one born in March, but if you pick two random people from those groups, it’s X% more likely that it is so.

      Astrology is complete fucking bullshit though.

        • @Dasus@lemmy.world
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          11 year ago

          I was just pointing that out because me saying birth months can affect personality isn’t me validating any aspect of astrology.

          Just wanted to make sure no-one thinks I’m trying some feeble defense of it.

  • @flakpanzer@lemmy.world
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    01 year ago

    Wait, I thought gravity is not a “force” but the curvature of spacetime, so at some point the curvature gotta end or be disturbed by some other source nearby, right? A star so far away is not exerting any “force” on me as I already have two massive objects Earth and Sun twisting the spacetime around me so much. I could however be getting some gravitational waves from that star but not sure how strong they’d be or if they reach me at all (again given Sun and Earth).

    (NOTE: I’m an engineer not a physicist so my understanding could all be wrong)

    • @mumblerfish@lemmy.world
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      31 year ago

      Eh. It’s not really a definite distinction. Even in GR you formulate effective potentials and the gradient on those potentials are still called forces. Then, what is a force on microscopic scale? It is the exchange of force mediators, like photons. If gravitons exists, then there is even a similar framework for defining a force on a microscopic level for electromagnetism as well as gravity. Furthermore, electromagnetism (qed) also has an interpretation as a curvature, as it is a gauge theory, just not a curvature of physical spacetime, and that does not disqualify if from being called a “force”.