Dennis B.

asked • 10/21/14

Is Space really Elastic and Gravity of the Planets is a result of their bend of Space?

 
I wanna ask about Astronomy!

If Space is really elastic kind of, and the Gravitation pull of planets is due to the bend they cause because of their mass in Space, would it be true still that if an object could land on the back side of that kind of planet, that it would still be acted upon by the same Gravitational pull, and yet the mass of the planet is towards that back side? In other words, how could that theory of bending Space be true if the Planet has the same Gravitational pull over all its sides?

Nathan B.

I'm curious by what you mean by "back side," as planets tend to be spherical (although wider around the equator than by the poles).  Do you mean if there is more mass near one side of a planet than the other, like one side has more mountains and the other more trenches and divots?
 
The reason why objects tend to be (nigh-)spherical is that it allows for the greatest amount of mass covering the smallest possible area, and gravity helps by having everything pull towards the center point.  So while if one side might have a bit more mass, it is relatively miniscule compared to the mass over all, just like how the Earth may affect the Sun's movement, it's inconsequential compared to its affect on the Earth, and the same thing with the Earth and the Moon.
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10/21/14

1 Expert Answer

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Alan B. answered • 08/20/15

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