Comments on: What would happen if the sun disappeared? http://earthsky.org/space/sun-light-motion-change A Clear Voice for Science Fri, 25 May 2012 03:38:58 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: anon http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-672061 anon Thu, 24 May 2012 23:43:03 +0000 http://208.96.63.114/?p=2531#comment-672061 daljaaaasdh daljaaaasdh

]]> By: jasmin medina http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-634206 jasmin medina Thu, 26 Jan 2012 01:40:49 +0000 http://208.96.63.114/?p=2531#comment-634206 hello everyone, my 9 year old daughter is having a academic fair in school about this same topic. "What will earth be like with no sunlight". Now I was reading over all of your comments and I would like to know if any of you have any ideas on a good demonstration for her project. When it comes to science I am clueless. Please help me. Thank you.. hello everyone, my 9 year old daughter is having a academic fair in school about this same topic. “What will earth be like with no sunlight”. Now I was reading over all of your comments and I would like to know if any of you have any ideas on a good demonstration for her project. When it comes to science I am clueless. Please help me. Thank you..

]]> By: nonyabiz http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-608817 nonyabiz Fri, 04 Nov 2011 15:41:43 +0000 http://208.96.63.114/?p=2531#comment-608817 Wrong, the effect would be instantaneous. Why? Well consider that if the effect of gravity had a lag equal to the speed of light, then the grav effect on Neptune would be 40 hours out of sync and there's be generation of 'torque' due to the angular momentum. You really think each planet would maintain an orbit around the central body if the effects were delayed differently on each planet given the time it takes light to propagate? So no torque, no delay. Wrong, the effect would be instantaneous. Why? Well consider that if the effect of gravity had a lag equal to the speed of light, then the grav effect on Neptune would be 40 hours out of sync and there’s be generation of ‘torque’ due to the angular momentum.

You really think each planet would maintain an orbit around the central body if the effects were delayed differently on each planet given the time it takes light to propagate?

So no torque, no delay.

]]> By: Matt Molberg http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-598864 Matt Molberg Thu, 15 Sep 2011 18:49:54 +0000 http://208.96.63.114/?p=2531#comment-598864 In this scenario, at the event horizon of a black hole the gravity is pulling light to such a degree that the (always traveling at the speed of light,) light, cannot escape. Logic tells me that under the event horizon the pull of gravity is even stronger. Faster? I am not mentally equipped to refute Einstein's general relativity, but that has always bugged me. If it is massless what handle does gravity grip? In this scenario, at the event horizon of a black hole the gravity is pulling light to such a degree that the (always traveling at the speed of light,) light, cannot escape. Logic tells me that under the event horizon the pull of gravity is even stronger. Faster? I am not mentally equipped to refute Einstein’s general relativity, but that has always bugged me. If it is massless what handle does gravity grip?

]]> By: Henning http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-573290 Henning Wed, 25 May 2011 17:53:55 +0000 http://208.96.63.114/?p=2531#comment-573290 Maybe the reason that you cant detect Gravitons is because gravity is instant force?.. Maybe the reason that you cant detect Gravitons is because gravity is instant force?..

]]> By: Henning http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-573283 Henning Wed, 25 May 2011 17:39:01 +0000 http://208.96.63.114/?p=2531#comment-573283 Yes it’s true that if the Sun disappeared, it would take around 8,5 minute before it all went dark, but what about gravity, I know it’s said that nothing goes faster than light, but what stops gravity from having an instant affect? How can you prove that gravity is not instant? Yes it’s true that if the Sun disappeared, it would take around 8,5 minute before it all went dark, but what about gravity, I know it’s said that nothing goes faster than light, but what stops gravity from having an instant affect?
How can you prove that gravity is not instant?

]]> By: Ness http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-557731 Ness Fri, 15 Apr 2011 03:25:53 +0000 http://208.96.63.114/?p=2531#comment-557731 Hmm interesting Hmm interesting

]]> By: bill http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-544310 bill Sun, 13 Mar 2011 03:39:25 +0000 http://208.96.63.114/?p=2531#comment-544310 some say that space is empty .how can it be empty when it is full of gravity capable of keeping the earth in orbit. there is much more energy besides solar to be used. look at tesla's radiant energy some say that space is empty .how can it be empty when it is full of gravity capable of keeping the earth in orbit. there is much more energy besides solar to be used. look at tesla’s radiant energy

]]> By: bill http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-544308 bill Sun, 13 Mar 2011 03:35:52 +0000 http://208.96.63.114/?p=2531#comment-544308 don't you see the amazing implications about gravity. The effect of gravity would remain even with sun's disappearance. what is gravity? don’t you see the amazing implications about gravity. The effect of gravity would remain even with sun’s disappearance. what is gravity?

]]> By: Daniel http://earthsky.org/space/sun-light-motion-change/comment-page-1#comment-543065 Daniel Wed, 09 Mar 2011 02:01:26 +0000 http://208.96.63.114/?p=2531#comment-543065 without the sun we would freeze to death.Within a week, the average global surface temperature would drop below 0°F. In a year, it would dip to –100°. The top layers of the oceans would freeze over, but in an apocalyptic irony, that ice would insulate the deep water below and prevent the oceans from freezing solid for hundreds of thousands of years. Millions of years after that, our planet would reach a stable –400°, the temperature at which the heat radiating from the planet’s core would equal the heat that the Earth radiates into space without the sun we would freeze to death.Within a week, the average global surface temperature would drop below 0°F. In a year, it would dip to –100°. The top layers of the oceans would freeze over, but in an apocalyptic irony, that ice would insulate the deep water below and prevent the oceans from freezing solid for hundreds of thousands of years. Millions of years after that, our planet would reach a stable –400°, the temperature at which the heat radiating from the planet’s core would equal the heat that the Earth radiates into space

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