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region of space resulting from the collapse of a star; extremely high gravitational field black hole
gravitational field theorized to exist in outer space black hole
process whereby a star or planet holds an object in its gravitational field capture
(cosmology) a hypothetical form of matter that is believed to make up 90 percent of the matter in the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force dark matter
speed needed to leave gravitational pull escape velocity
minimum velocity needed to escape a gravitational field escape velocity
ideal falling motion of something subject only to a gravitational field free fall
unit of gravitational acceleration equal to one centimeter per second per second (named after Galileo) gal
measuring instrument for measuring variations in the gravitational field of the earth gravimeter , gravity meter
movement downward resulting from gravitational attraction gravitation
(physics) the mass of a body as measured by its gravitational attraction for other bodies gravitational mass
gauge boson that mediates the (extremely weak) gravitational interactions between particles graviton
gradient in the gravitational forces acting on different parts of a nonspherical object gravity gradient
(spaceflight) a trajectory that passes close to a planetary body in order to gain energy from its gravitational field gravity-assist
massive grouping of galaxies in the direction of Centaurus and Hydra whose gravitational attraction is believed to cause deviations in the paths of other galaxies Great Attractor
English scientist who formulated the law of elasticity and proposed a wave theory of light and formulated a theory of planetary motion and proposed the inverse square law of gravitational attraction and discovered the cellular structure of cork and introd Hooke , Robert Hooke
(medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force) infusion
property of a body that causes it to have weight in a gravitational field mass
(cosmology) the theory that the solar system was formed by the gravitational accumulation of planetesimals planetesimal hypothesis
(physics) the principle that an observer has no way of distinguishing whether his laboratory is in a uniform gravitational field or is in an accelerated frame of reference principle of equivalence
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