14 DAY TRIAL // As I'm sure many of you have wondered why the Earth stays in a stable orbit around the Sun, here is a short video clip uploaded to YouTube by the guys at MinutePhysics, providing a limited, yet entertaining explanation of why this happens.
I find it very interesting that they brought up the number of dimensions we live in as a factor in stabilizing Earth's orbit. Though most scientific theories assume that we live in three dimensions, it's always nice to consider what would happen if that were not the case.
In short, the video explains the interplay between the Sun's gravity, which is constantly pulling our planet closer to the star's surface, and the speed at which the Earth is traveling around its parent star.
These interactions between equal forces are the reason why impulses we transfer into the ground – from running, jumping, exploding nuclear bombs, what have you, do not nudge Earth's orbit so that it spirals into the Sun.