Take the 2-minute tour ×
Astronomy Stack Exchange is a question and answer site for astronomers and astrophysicists. It's 100% free, no registration required.

As Einstein's General relativity suggests that the space time curves in the presence of matter, which is experimentally proven too, this phenomenon also explains orbits. My question is if the presence of mass curves space-time, in which direction does it bend, if we assume that it bends in one of all possible directions then what makes the body to choose that particular direction. Does all the bodies bend the space-time in the same direction ?

share|improve this question

closed as unclear what you're asking by Eduardo Serra, Stan Liou, called2voyage Apr 9 at 14:54

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question.

2  
(v1) It is very unclear as to what this question is asking, but I strongly suspect that one of the OP's confusions is regarding the difference between intrinsic and extrinsic curvature. Intrinsic curvature is the only one relevant to GTR and does not depend on spacetime being embedded in any higher-dimensional boondoggle. But if the question is merely that "what makes [a falling] body choose [a particular orbit]?", the answer to that is is its location and initial velocity. –  Stan Liou Apr 8 at 6:17
add comment

1 Answer 1

We cannot say that it bends in a particular direction because space-time in relativity is 4-dimensional. The space-time diagram which we see frequently is just a simple way of explaining it in two dimensions because 4-dimensional space is hard to visualize.

share|improve this answer
    
Could one say that the 'direction' is another axis 'g' perpendicular to x,y and z? –  Alexander Janssen Apr 8 at 7:02
    
Well, I cannot say anything for sure as I am not an expert but as the 4th dimension is the time dimension, we can visualize a 3-dimensional space for every value of time. Watch this video. It's not directly related to this question but might be helpful. –  Yashbhatt Apr 8 at 12:41
add comment

Not the answer you're looking for? Browse other questions tagged or ask your own question.