how come there is gravity on earth but not is space?

Answer 1

You are incorrect in your assumption. There is gravity everywhere throughout the universe.
The planets and moons orbit one another entirely because of gravity.

You are making the common mistake of thinking that things are weightless in space for lack of gravity. The reason for weightlessness in space is that an object in orbit is essentially falling, and all of the things in it are falling at the same speed. If you were in an elevator, and someone cut the rope, you and the elevator would be falling at the same speed, and it would seem to you that you were floating in the elevator, until of course the elevator hit bottom and upset the illusion. Rudely, I might add.

Answer 2

Gravity does exist in space but the effect on any mass is reduced considerably the farther away it is from another mass. When the space shuttle is orbiting earth, they are caught in the earth's gravitational field but the astronauts feel weightless because the effect of earth's gravity on their own mass is reduced. Actually, there is still a small effect they call "micro-gravity" because when they drop a small object in the orbiting shuttle, it eventually falls toward the earth over a long period of time. The orbit they are in is actually like falling but since they are moving at such high speeds, they don't fall into the atmosphere until they are ready to break orbit and return. There is a company that will take paying customers up in a plane that will then dive several times letting you experience "weightlessness" for short periods of time. Since you are falling inside the plane, you don't experience the gravity that is acting on you. This is similar to what happens in orbit.

Answer 3

That is a very good question. I really do not know a lot on scientific matters, but it would make sense to me that the reason there is gravity on earth, but not in space is because: of maybe the directional pull forces gravity upon earth. But if there was gravity in space then we would be falling constantly in to God knows where.

Answer 4

Gravitational forces do exist in space. If the sun didn't have pull on the planets they would simply wonder out of the solar system. Zero gravity isn't really ZERO gravity. In zero gravity the force isn't strong enough to pull you down, though a weak orbit in the shuttle or space station will crash it into earths atmosphere. Earths gravitational force can alter the trajectory of space objects such as asteroids and comets.

Answer 5

There is gravity in space. Gravity does exist in a vaccum.

It's amazing the responses people are giving you.

For example, when you see astronauts playing with some small object in space it appears that there is no gravity, but the reality is that both objects are falling at the same time. But I dont have time to give you a lesson on all this.. Look up orbit, look up gravity, take a physics class.

Answer 6

Have you ever cracked open a physics book?

F=G*m1*m2/(r^2)

This is Newton's law of gravity. F is the force of gravity you would feel. m1 and m2 are the masses of the two objects (such as yourself and the earth), r is the distance between them, and G is a constant. There is less gravity in space due to the large separation between an object and earth (that all important r term.) Sorry, but vacuum has really nothing to do with it.

Hope this was helpful.

Answer 7

From our childhood, we believe that gravity holds us and other objects on the Earth unless it is overcome by an excessive force (i.e., a rocket); however, the problem arises when explaining the scientific nature of gravity and its genesis. For example, where does it originate? Recent studies and theories have given credibility to "dark matter" as the force that holds the universe together and not so called "gravity".

Answer 8

There is gravity in space. Everything has gravity, even the smallest particle of dust. This gravity decreases exponetially over distance, giving the appearance of a lack of gravity.

Answer 9

There IS gravity in space, but you can't really feel it because of the gravity of the other bodies in space exerting thier gravitational pull on you. Every molecule has a minute gravitational field, but they must clump together to to exert that force,a nd must be a larger mass than others close by.

Answer 10

This is what science class if for.
Te earth has a gravitational pull on objects close to it, and other planetary objects have a gravitational pull as well, increasing depending on its size. if you are ot in the middle of space, and there are not any objects nearby with a strong enough gravitational pull, it will seem as if there is no gravity.