What is the reason of gravitation?

Answer 1

We really, honestly, don't know. We can measure it and predict it. We know its properties. But we don't know why it happens. The general relativity view that spacetime is warped in the presence of mass still has no explanation for why that is true. Nor do we know the reasons for the other fundamental forces.

Answer 2

Here is a good experiment: Get a bed, a marble, and a bowling ball. Place the marble on the bed. As you can see, the marble stays at rest. Now put the bowling ball on the bed, a couple inches away from the marble. You will see the marble moving towards the bowling ball, and accelerating until it reaches it.

That's pretty much what modern science says happens, except that in the case of gravity, is space that gets curved, and not the bed. The more mass on the object, the more curvature, thus more gravity.

However, also note the problem with that theory:
In the case of the bowling ball, the marble, and the bed, it was Earth's gravity what caused the bed to curve. If you perform this experiment in space, the bowling ball will never curve the bed. So how do objects in space fall towards each other if there is no uphill or downhill when it comes to space? I think I will be posting that question myself.
Maybe gravitons are not such a bad theory after all....
http://en.wikipedia.org/wiki/Graviton

Answer 3

See theory of general relativity =]

Answer 4

As soon as I answer that, I will be claiming The Prize (Nobel Prize for those not familiar with the field).

Answer 5

to keep your feet firmly on the ground! To give you something to stand on. To wake you up when you've fell asleep under the apple tree too long!

Answer 6

Y'know, there's a lot of physicists who would like to know that too.

Answer 7

Because of what goes up must come down... Lol. just kiddin... don't really know ... hahaha