No it hasn't, and that's the only Law of Gravity.

I'm talking about theory, the reasons WHY gravity affects things not HOW.

if 1st answer is not satisfiying enough i blame germans for inventing gravity so things break once u let them go its very easy but very satisfying to know what u cherrish never let out of eyesight let stand ever let out of hands

Physicists have shown that gases with a negative absolute temperature can have gravity repel instead of attract: http://www.nature.com/news/quantum-gas-goes-below-absolute-zero-1.12146


Cool stuff, eh?


This is what a high school physics background gets you right here ^^. Apparently you haven't heard of General Relativity yet. GR does a great job of explaining all that Newton's gravitational theory does, except Newton's laws do fail in several instances, e.g. gravitational lensing. And even GR has its limitations as well, since there is no quantum theory of gravity yet.

still i heard it was the germans

Higgs Boson

higgs field is for mass, not gravity. there are theorized particles that are massless too.

one theory for the expansion of the universe requires repulsive gravity.

also, if string theory proves correct, gravity can be used to probe extra dimensions/parallel universes.

Another great question.. What would happen if the sun instantaniously disappeared?

Would we be removed from our circular motion instantly? Remember light takes 8 minutes.

If it were instant, would we continue our trajectory? Or would the rotational motion be lost and we continue in a straight line?


Gravity communication is a concept seen in Ender's Game a book. The concept was instantanious communication across the universe by alteration of gravity.
Say you connect two particles via mathematical attraction/physics ( I dunno how... ) Then you can modify these particles as bionary and have instant communication. Theory is even particles accross the universe are attracted and connected, however weakly.

Another great question, say your driving at light speed and you turn your headlights on. Would it be as if you never turned the lights on?

This post was edited by Pharmdizzle on Feb 1 2013 07:04pm

gravity propagates at the speed of light, so there would be no way to tell the sun disappeared for 8 minutes

you couldn't turn on your headlights if you were moving at the speed of light; for many different reasons.

I'm thinking Gravity exists to prevent Everything from moving at the speed of light. This may be a poor scientific response, however there are Scientists who think Gravity may not actually exist at all
http://www.nytimes.com/2010/07/13/science/13gravity.html?pagewanted=all&_r=0 So what chance do I have in explaining it


Thanks, that was a very interesting article, but I fear you are misrepresenting the conclusions portrayed.

The article implies theory, not an actual demostration. So it is improper to say they "have shown".



Realisticly this suggests the implication of Absolute Zero is not correct. A few Billionths of a degree below Absolute Zero Kelvin? or as quoted in one of the responses:



In any event, I really enjoyed reading the article, Thanks again

This post was edited by FullArcFG on Mar 3 2013 07:47pm