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michelrochette
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I can "understand" the gravitational pull of the sun on the Earth and the Earth mass effect toward the moon, but what pull the sun?
a neophyte.
a neophyte.
michelrochette said:I can "understand" the gravitational pull of the sun on the Earth and the Earth mass effect toward the moon, but what pull the sun?
-RA- said:I would presume that gravity works completely differently on a galactic scale, as you don't see any other galaxy shaped objects on smaller scales. I think I'm correct in saying that galaxy formation is still not fully explained by gravity alone yet?
michelrochette said:Isaac Newton found out that the strength of the pull of gravity weakens the farther you get away from an object, in proportion to 1/(r*r), where r is the distance you are away from the center. The strength of the gravitational pull is also proportional to the mass of the object.
The nearest star, Proxima Centauri, is 4.3 light-years away, so stars do not have any pull on each other. i assume that the mass of a black hole is the only thing that can pull the sun.
Am I right?
Gravitational pull is the force of attraction between two objects that have mass. It is responsible for keeping planets in orbit around the sun and for the moon orbiting around the Earth.
The sun has a massive amount of mass, which creates a strong gravitational pull. This pull keeps the sun in its orbit around the center of the Milky Way galaxy and also causes the planets in our solar system to orbit around the sun.
The greater the mass of an object, the greater its gravitational pull. This means that massive objects, like the sun, have a stronger gravitational pull than smaller objects, like planets.
Einstein's theory of relativity states that mass can bend the fabric of space-time, creating a gravitational pull. The sun's massive amount of mass causes a curvature in space-time, creating the gravitational pull that keeps the planets in orbit.
Yes, Newton's theory of gravity also explains the relationship between mass and gravitational pull. It states that any two objects with mass will attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.