"Robert J. Kolker" a écrit dans le message de
...
The understanding of gravity consists is predicting motions in a
gravitational field. No one knows what "causes" gravity. Newton did not,
Einstein did not. However both predicted motions in a grav field with
some degree of accuracy.

It is exactly what Egalliv09 said:
"It is no
wonder that physicists work so hard to relegate the idea of "mechanism" to
the
trash bin of history. It avoids the embarrassment of admitting that they do
not
understand their subject."

Nevertheless some try, see H E Puthoff and his interpretation of GR by the
polarizable vacuum:
http://www.earthtech.org/publications/

FG

Bob Kolker