what is the secrete behind the gravity?

Answer 1

Well, the most important thing behind gravitation is... mass. Everything that has mass, has gravitation. Gravitation affects things that have mass. Where is gravitation, there is mass.

How the gravitation works, we know from the practice. We have Newton's formulas, formulas for Multiple Body Problem, Einstein's formulas... but what causes these things to interact and whether we can use this in clever ways beside it normally works is still mostly secret - there are only guesses, some of them pretty good.

There is a theory that tries to explain gravitation with hypothetical particle called "graviton", but there are also theories that explain gravitation as "curvature of the universe".

Historically there has been many theories, and even nowadays there are many alternative theories to the gravitation:
- Brans-Dicke theory of gravity (1961)
- Induced gravity (1967), a proposal by Andrei Sakharov according to which general relativity might arise from quantum field theories of matter.
- Rosen bi-metric theory of gravity
- In the modified Newtonian dynamics (MOND) (1981), Mordehai Milgrom proposes a modification of Newton's Second Law of motion for small accelerations.
- The new and highly controversial Process Physics theory attempts to address gravity
- The self-creation cosmology theory of gravity (1982) by G.A. Barber in which the Brans-Dicke theory is modified to allow mass creation.
- Nonsymmetric gravitational theory (NGT) (1994) by John Moffat
...and more.

I guess, the fact that there are so many theories gives the clue, that the secret, for now, still remains secret.

Answer 2

Huh? What secret? Are you asking how gravity works? No one's entirely sure, but the current theory has to do with Einstein's picture of spacetime. Under this paradigm, all matter and energy affects surrounding space by deforming or warping it (visualize a sheet of fabric stretched reasonably taut, with a ball placed in the middle, making a dent in the otherwise straight fabric) The more massive the object is, the more it warps the space around it. Other objects are affected by the deformation in space caused by the ball, and have a tendency to fall toward the center of the gravity well.

This is, of course, a very simplified explanation of the theory, but it will do for now. Physicists are currently working on a quantum theory of gravity, as well as trying to tie it to the other fundamental forces in a unified field theory, using string/M-theory as well as other systems. Perhaps one day we'll understand gravity better, but for now, that's what we've got.

Answer 3

If I knew I would be on my way to recieve a Nobel Prize. No one really knows exactly how gravity works yet, but there are a few plausible ideas. This is still one of the great mysteries of physics.

Answer 4

None. It is a property of mass. The actual explanation of why gravity exists has not been found yet.

Some may explain this as a time warp. That explanation is nothing but a Truth warp. Dont go for it

Answer 5

Science students have made up a new secret wish - where they wished it would be really great if a coconut fell on Newton's head instead of the apple.

Answer 6

If we get a correct answer to this question all the school books will have to be rewritten. At the very least, "Albert Einstein" will have to be replaced with the name of someone who really does understand physics and mathematics.

Answer 7

Earth
g=6.67E-11*5.96E24/6.378E6^2

9.8m/s^2

Answer 8

No secret. F=GMm/r^2.

Answer 9

There is no such thing as gravity , the Earth sucks!!!!

Answer 10

Dark energy?