Newton laws of universal Gravitation

Editor's Note: We republish a brilliant little gem that reflects upon Newton's law of universal gravitation—a law that was still in effect on 9/11, judging by the photographic evidence. The article, written by "Down Under" blogger Dalia Mae Lachlan, was originally published in Flipside News. Lachlan, by the way, has also authored a series of children's books, "Awaken Your Kids" — one of which, "The Three Tall Buildings, " helps youngsters understand what really happened on 9/11 so they can explain it to their parents. Sometimes that's the way the world wakes up.

This is what a building collapse looks like. Even though the pillars of the building have been skillfully severed by explosives – everything of weight is going downwards.

Newton's law of universal gravitation states that any two bodies in the universe attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This is a general physical law derived from empirical observations and was formulated in Newton’s work Philosophiæ Naturalis Principia Mathematica ("the Principia"), first published on 5 July 1687.