If a planet stopped turning, would it lose its gravity?
No, a planet does not have to move to generate gravity. Gravity is simply caused by matter existing. We are not exactly sure how gravity is caused. Newton believed gravity was a force exerted from one particle to another – this force will only affect objects with mass, making photons (light) immune from being attracted by gravity. 300 years later Einstein said gravity does affect photons, and gravity is caused by the curves in spacetime – his theory was proven to be correct, light IS affect by gravity, as discovered in 1919 during a total solar eclipse. However, that still does not answer, “How is gravity caused” – this question still remains unanswered. It is the big Newton vs. Einstein: http://www.onlineinvestingai.com/blog/wp… One thing I can tell you, gravity is NOT caused by movement, since we can calculate the acceleration of gravity using the equation, “g =