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If this doesn't blow your mind.........

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  • DovefromaboveDovefromabove Posts: 88,147
    edited 21 February
    🤔 isn’t time a human construct?  Without our need to organise and sequence stuff, would time as a concept exist? 😵‍💫

    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.





  • Pete.8Pete.8 Posts: 11,340
    As I understand it..
    Our solar system was formed from gas and dust that due to the field of gravity slowly coalesced over billions of years.
    As the density increased so did the gravitational attraction.
    Eventually it reached a point where the gas and dust spiralled (so by then it was all spinning) inwards and collapsed with such gravitational attraction it exploded leaving a burning spinning star (our Sun) and a ring of dust/gas and rocks on the same plane as the sun was now spinning.
    Over billions of years these rocks/dust/gas also gradually coalesced due to the field of gravity and formed the planets.
    As everything was spinning around it's understandable that all the planets formed on the same plane.
    At some time, Uranus was hit by something very big and tilted the planet onto its side.
    So the rings of Uranus (no giggling please!) are not around the equator, they are around the poles.

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • B3B3 Posts: 27,505
    Time moves really slowly if you're watching a really boring play and you can't escape at the interval because the person you're with, for some inexplicable reason, is enjoying it.
    Double maths will do it too.
    In London. Keen but lazy.
  • ErgatesErgates Posts: 2,953
    A relative of mine is an expert in 8 dimensional geometry. I can’t get my head round that at all! 
  • punkdocpunkdoc Posts: 15,039
    If my maths had been a little better, I might have finished my astrophysics degree, but then again...starting to study again in your mid 50s is hard.
    How can you lie there and think of England
    When you don't even know who's in the team

    S.Yorkshire/Derbyshire border
  • steveTusteveTu Posts: 3,219
    Ok - but why did the rings orbit around the equator? Why not pole-pole? I know the supposed origins of the ring - but doesn't that in itself work off the same premise - ie a moon was already orbiting on that plane? But why on that plane?

    The second paragraph basically says that E=MCC means that time and distance must exist as long as matter, energy or light exists - and given that the big bang never starts from 'nothing' (just a very small, dense 'thing') - then time (as far as big bang goes) existed alongside that matter, as space (distance) must have. I'm not certain whether it also says that time=matter=energy=light=distance (space) (as you can't put anything either side of an equals that isn't the same can you? ). Is that right?

    UK - South Coast Retirement Campus (East)
  • steveTusteveTu Posts: 3,219
    🤔 isn’t time a human construct?  Without our need to organise and sequence stuff, would time as a concept exist? 😵‍💫

    How we measure time obviously is. But if we took all sentient beings out of the universe I would think the universe would exist (which philosopher asked whether the moon stopped existing if he didn't witness it? Was it even a philosopher?). And if Einstein was right and his theory true, then matter, light, energy, time, distance would all exist irrespective.
    UK - South Coast Retirement Campus (East)
  • steveTu 
    The reason why some moons are in the plane of the equator of the planet is that they formed at the same time as the planet from the same cloud of matter, with the same spin.
    As for Einstein's equation, it merely says that if you know how much inertia (ie mass) something has then you know how much energy it has, and vice versa. I think you are trying to read too much into it.
  • steveTusteveTu Posts: 3,219
    I thought = meant that the things on either side were then the same. No? So energy and matter are the same as are matter and speed of light - they are interchangeable. They convert from one to the other using that E=MCC formula. They are then 'states'. Can you say in any equation that something = something that is not the same  (this sounds like the council of Nicosia now and the substance of Christ)?

    As for spin - but why spin? https://www.newscientist.com/lastword/mg24933181-200-where-does-the-spin-of-celestial-objects-come-from-the-big-bang/ lost me! I give up on myself - I just don't follow how matter in a mass in all directions, coalesces down into planes.

    UK - South Coast Retirement Campus (East)
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