Why would anything fall? How do objects know that what they are touching is more or less heavy than they are? Why would anything be heavy? Why would every object experience a downward force upon itself, proportional to its weight?
Why doesn't the Sun suck all objects it's 'attracting' into it?
It does. The product of two constant forces at right angles, absent friction removing the energy of the system, is an ellipse.
The only way for the objects in orbit around the sun, to collide with it, is for something to reduce their tangential velocity to 0. Otherwise their distance from the sun cannot change (edit: orbital magnitude, distance can cyclically change, in exchange with speed, symmetrically).
This is a very simple concept.
It is not simple, it is ridiculous. If I get close to an iron object with a magnet, the object is attracted in a straight line. It doesn't start magically revolving around the magnet. They collide.
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