The Great Metric Tensor for all spherical gravitational fields
in spherical polar coordinates (r, [theta], [phi], [x.
If successful, it would certainly be a major step forward in physics: the ability to produce, detect and, ultimately, control gravitational fields
The precise agreement between our observations and GR's predictions not only strongly supports the validity of Einstein's theory--at least for the strengths of the gravitational fields
probed by the Double Pulsar--but it also puts severe constraints on alternative theories of gravity.
The Lagrangian (L) for this gravitational field
can be defined using the metric tensor as:
Despite the strong gravitational field
of the white dwarf-nearly 100,000 times that on Earth-the ions stay above the surface because they are continually pushed up by the strong radiation from the star.
These results provide a taste of the groundbreaking science that GRAVITY will produce as it probes the extremely strong gravitational fields
close to the central supermassive black hole and tests Einsteins general relativity.
Instead, the team used deep circulation theories developed by Showman and Kaspi to predict what the gravitational fields
of Neptune and Uranus should look like.
The early Kaluza-Klein (K-K) theory of unification was further developed with a scalar field , which can modify both the electromagnetic and gravitational fields
Einstein's theory has been well tested in weak gravitational fields
such as those in our solar system.
In particular, they became curious about quantum fluctuations associated with gravitational fields
The relativistic dynamical equation of motion for particles of non-zero rest masses in combined electric and gravitational fields
is given as 
The latest version includes new features such as gravitational fields
and news birds - such as the Space Eagle.