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Every particle of matter attracts other particles with a particular force, called the gravitational force. Objects with more mass have a higher gravitational force.

en.wikipedia.org/wiki/Gravity

Gravity, or gravitation, is a natural phenomenon by which all things with mass are brought toward (or gravitate toward) one another, including planets, stars and ...

spaceplace.nasa.gov/what-is-gravity

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.

starchild.gsfc.nasa.gov/docs/StarChild/questions/question30.html

Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the ...

www.qrg.northwestern.edu/projects/vss/docs/space-environment/1-what-is-gravity.html

Gravity is a force pulling together all matter (which is anything you can physically ... The more matter, the more gravity, so things that have a lot of matter such as ...

briankoberlein.com/2015/02/26/cradle-to-grave

Feb 26, 2015 ... We often speak of gravity as a force. More accurately it is a feature of spacetime. Even more accurately, we don't know what it is.

math.ucr.edu/home/baez/physics/Relativity/GR/gravity.html

So, what does this have to do with gravity? It is quite simple! When a mass is present in the above space-time it distorts it so that whilst it remains true that ...

science.howstuffworks.com/environmental/earth/geophysics/what-is-gravity.htm

The Road Runner cartoons play fast and loose with gravity. Given the opportunity , Wile E. Coyote usually chases his quick-footed foe off the edge of a cliff -- but ...

www.livescience.com/37115-what-is-gravity.html

Jun 3, 2013 ... Gravity is the force of attraction that pulls two objects toward each other.

coolcosmos.ipac.caltech.edu/ask/300-What-is-gravity-

Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull. The more massive an object is, the  ...