gravitation

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The gravitational interaction is an interaction between masses.
The gravitational interaction associated with this discrete symmetry therefore extends to infinite distance.
Marcy notes that although gravitational interactions between a star and a nearby planet tend to make orbits circular, the new planet follows a path more elongated than that of Pluto.
The problem of correctly defining the source of the gravitational power heating the Bok globules remained unsolved in absence of a theory of the gravitational interaction able to specify the rate at which the gravitational waves hit the particles.
On the other hand, it has been reported [6] that propagation of fermions in curved space-time generates gravitational interaction due to the coupling of its spin with space time curvature connection, and causes a CPT violating term in the Lagrangian, generating an asymmetry between the left-handed and the right-handed partners under the CPT transformation.
The effects of gravitational interaction between galaxies can be devastating.
The most plausible explanation is that some kind of gravitational interaction with two other stars in the region ejected the massive body.
They were first observed during the Voyager spacecraft flybys in the early 1980's and it was realized that these bizarre features that flare out like spokes on a bicycle wheel were not caused by gravitational interactions between the planet, moons or ring material.
Studies of planetary motions in the new system reveal complex gravitational interactions between the planets and give us insights into the long-term evolution of the system," said Lovis.
Bonning and her colleague Gregory Shields of the University of Texas at Austin studied images of the Perseus cluster and calculated the gravitational interactions of astronomical objects, trying to determine whether this black hole could have been tossed from another galaxy and then snapped up by NGC 1277.
The computations also accounted for the up-and-down bobbing motion of M67 and the sun through the galaxy's plane of stars -- wavelike orbits that all celestial objects in the Milky Way exhibit, to some degree, thanks to complex gravitational interactions with other objects.
The authors think that BX442 may have been twisted into a spiral thanks to gravitational interactions with a nearby dwarf galaxy.