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Thread: What would you see if....

  1. #1 What would you see if.... 
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    IF the sun dissapeared in an instant, how would this appear to an observer from earth, ie what would they see, based on conventional scientific theory....


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  3. #2  
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    For 8 minutes, they'd see the sun.


    Let me warm up first....don't want to pull a hammy.
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    Then the Earth will travel in a straight line and although the moon is tied to us I don't believe it will stay very long even though we won't be able to see it anyway. I'm not quite sure what will happen next though..... Surely we will freeze to death.

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  5. #4  
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    Ignore all the other effects, if you were looking at the sun with appropriate safety glasses, what would you see as it dissappeared?
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  6. #5  
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    How does it disappear? Does it just completely vanish? in that case you would see the sun, and than see nothing at al, except the stars and the streetlights. Just as if it would be night.
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  7. #6  
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    Quote Originally Posted by Artemis
    How does it disappear? Does it just completely vanish? in that case you would see the sun, and than see nothing at al, except the stars and the streetlights. Just as if it would be night.
    If the sun were to instantaneously dissappear, that is not what you would see! - you would see something else.
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  8. #7  
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    Quote Originally Posted by billco
    If the sun were to instantaneously dissappear, that is not what you would see! - you would see something else.
    Do you mean 'what would you see?', or 'what would you perceive?'.
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  9. #8  
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    Quote Originally Posted by Ophiolite
    Quote Originally Posted by billco
    If the sun were to instantaneously dissappear, that is not what you would see! - you would see something else.
    Do you mean 'what would you see?', or 'what would you perceive?'.

    For you Ophie, both will do.
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  10. #9  
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    This is bugging me... :-D I can't find an answer..

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  11. #10  
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    Quote Originally Posted by Bettina
    This is bugging me... :-D I can't find an answer..

    Bee
    THink about the speed of light, how big the sun is and it's composition.
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    hmmm...lets imagine we wouldnt freeze to death, i dont think we would be in total darkness since we would get light from other stars, it would be very little, but none the less, still light. what we would observe would be an imploding star would we not? and if it happened in an instantaneous moment, then surely there would be a LOT of hydrogen floating around, and who knows what changes that would make! but that does not really answer what we would physically see....we cannot see balck holes right? we just know they there and i think see evidence of rdiation....or maybe as the star implodes, the gamma rays no longer travel at the speed of light, so it is no longer light so we see evidence of light like if u had to wave a luminous stick in the dark u would see a trail of light...i would take time for the light to fade so even though the sun disappeared instantaneously we would obsemrve the light disappearing until all that we see is the radiation from the black hole....i dont know...
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  13. #12  
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    No it is not imploding, imagine it can dissappear in zero time. every atom cease to exist instantaneously.
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    well then the solar system would have i think 98.2% less mass and wow, imagine the changes! dont know what we would see though. possibilities of what would happen are endless but what we would momentarily see if looking in the direction of the sun is black...the would be SLIGHT lumination from other stars but then blackness! just space would fill the gap..there would just be darker sky maybe even blue sky, just without the sun so it appears darker. wow! what would all the planets orbit
    ?? if we think of the solar system as being in equilibrium, when the sun disappears all other matter would have to shift to maintain equilibrium but then there is nothing fo the planets to orbit which still does not answer your question and it is probably going to drive me insane for the next few weeks...what do u think we would see?
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  15. #14  
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    I'll let a few more people see this one then print my version as I believe it would happen.
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  16. #15  
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    if the sun all of a sudden disaphered for no reason into nothingness we would see the sun, then all of a sudden nothing. its like shutting of a light bulp. there is the light, now its gone. logical
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

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  17. #16  
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    Quote Originally Posted by Zelos
    if the sun all of a sudden disaphered for no reason into nothingness we would see the sun, then all of a sudden nothing. its like shutting of a light bulp. there is the light, now its gone. logical
    You called me dead in another thread, well this brain seems to work better than yours!

    The sun has a diameter of around 850,000 miles.
    At any instant photons are being created in vast quantities throughout the sun and its corona.

    If the sun dissappeared the light from the closest edge of the sun would reach us after approx 8min 20 seconds later. 2.3 seconds later light from a plane of the sun perpendicular to your line of sight and bisecting the centre of the sun would reach you, you would in effect see a cross-section of the sun, after this the disc would shrink to a dot after another 2.3 seconds, then a brief glimpse of light from the corona behind the sun would be the last rays to reach you.
    However the Temp at the centre of the sun (15M degrees) might just vaporise you as it hit the earth. It would NOT be like switching off a light.
    It would take 5 seconds to happen.
    8)
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  18. #17  
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    Groovie!

    I've also heard that it normaly takes alot of time for the light to travel from the fusion reactors inside to the outside. Exactly how long? I don't remember. My mom has ginko biloba, perhaps if i sneaked one of her pills?
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  19. #18  
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    I have seen it written that photons can take as long as sveral hundred thousand years to get from the center of the sun to outside space.
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  20. #19  
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    Yep, that's the one. hundred thousands. (Imagine hundred thousand years in five seconds).

    Exactly how hot is that???

    Wait, don't answer cause it ain't gonna happen anyway. Right?
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  21. #20  
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    interesting;

    first your seeing the results of what the sun produces and its in our visual spectrum. no doubt in our very highest levels, at that. So ask the same question but say for some reason we all lost that spectrum and that level of light is no longer visible to us.

    you might see a horizon around the sun and reflections off the moon, the stars would still be there. gravity, heat and energy would remain the same. in a short time you would adapt to less light, the horizon giving some light (as would be in a total solar eclips).

    if the entire sun just disappeared some how, say for one minute. for 8 minutes everything would be as it is, then we would lose orbit heading straight (not orbital) and when the sun reappeared after that minute an orbit should reform. if no increase in speed, we would end up about in the same orbit, if we gained speed at a closer distance than now or if we lost speed (most likely) the orbit would be further out. all in all we would travel only about 1800 miles in space. if some how the trauma didn't wipe us out, everything should recover.
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