you travel through space away from earth,what does the universal law of gravitation say about objects you have
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Gravity does not change the mass of an object, only its weight.\n\nIf you travel away from the Earth, or any concentration of gravity, you will weigh less, but your mass is unchanged.
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Undisputed laws of physics as we experience it in our universe.\n\nThe mutual attraction between all masses and particles of matter in the universe. In a sense this is one of the best-known physical phenomena. During the eighteenth and nineteenth centuries gravitational astronomy, based on Newton's laws, attracted many of the leading mathematicians and was brought to such a pitch that it seemed that only extra numerical refinements would be needed in order to account in detail for the motions of all celestial bodies. In the twentieth century, however, A. Einstein shattered this complacency, and the subject is currently in a healthy state of flux.\n\nNewton's law of gravitation\n\nNewton's law of universal gravitation states that every two particles of matter in the universe attract each other with a force that acts in the line joining them, the intensity of which varies as the product of their masses and inversely as the square of the distance between them.
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There is no set amount of "thrust" which is required to escape Earth's gravity as this thrust (a force) could potentially be applied over a great or short distance, causing totally different values for the work done by the force.\nAnd of course, the answer would depend on the mass of the object the thrust is accelerating.\n\nThere is something known as the "escape velocity", the initial velocity an object must have as it leaves the surface of the Earth (or the massive body in question) in order to forever escape its gravitational pull.  In this case, the force or mass is not a factor in whether or not the object ever resturns to Earth.\nThe escape velocity on the surface of Earth is about 7 miles per second (25,000 miles per hour).
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The escape velocity is the minimum velocity an object needs to obtain in order to leave the surface of the Earth and never return, it will break free of the Earth's gravitational field forever.\nIt is not necesary to obtain escape velocity just to go into space.  While orbiting the Earth, you are most definatly still trapped within the Earth's gravitational field and you will eventually return to the surface.\n\nIf an object launched from the ground with an initial velocity lower than the escape velocity, the object will eventually (it may be take a very long time) return to the Earth and fall back down.
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An object has mass regardless of gravity.  Gravity gives us 'weight' by placing force on the mass.\n\nSo, strictly speaking, an object's "mass" is a measure of how much matter it contains.  An object's "weight" is a measure of gravity's effect on that object.\n\nSo an object's mass doesn't change if it is on a different planet, but its weight will.
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If you were truly flying straight, you would eventually fly into outer space. Planes do follow the curvature of the earth--usually by maintaining a certain altitude.
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That's a mystery that the physicists haven't figured out.  \n\nAristotle theorized that the objects "want" to go toward the middle of the earth.  We might laugh, but think he has a point.  A common theme throughout reality is that things want to go toward equilibrium, and if you keep wanting to go toward something, or have a pull toward something, then you aren't at equilibrium.\n\nPhysicists theorize about gravitons, particles that are gravity.  I think that's wrong.  I believe that gravity is working on the stuff that space is made of.  I believe that the natural state of the universe is probably a singularity.  And when it's not in this state, it tries to return to this state.
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The gravity from your mom (Mother Earth)
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You are correct, but the effects are so insignificant, it doesnt nearly matter.\n\nAll object in the universe have a gravitational attraction to one another.\nTake the Earth and bowling ball example,\nThe Earth exerts a force on the bowling ball, and the bowling ball exerts a force on the Earth.  Both on these forces cause the other object to accelerate towards a common center of mass.  In the case of the Earth's gravitational force on the bowling ball, the force is huge in comparison to the bowling ball's force exerted on the Earth, so much so that we can easily neglect the 2nd force.\n\nLets look at some numbers.....\nIf we say the Earth has a mass of 5.9742 E24 kg and say we will say we have a very heavy bowling ball with a mass of 1000 kg, then we can calculate the gravitaional force between them if we know the distance.  Lets estimate their centers of mass are 6380 (~larger than radius of Earth), we can calculate the gravitational force to be,\nF_g = (G*M*m)/r^2\nF_g = 9789.58 Newtons, which would cause an acceleration of 9.7895 mm/s^2 for the bowling ball and a miniscule 1.63 E-21 m/s^2 for Earth.  To put that in perspective of just how slow acceleration is, if you were to accelerated you car from at a constant acceleration of 1.63 E-21 m/s^2, it would take you about 86500000000000 YEARS to go from 0 to 10 miles per hour!  I think for simplicity sake, Newton did all right.\n\nEDIT:\nYes, the bowling ball very much so does pull on the Earth.  How is the "universe" to know which object is suppose to be the planet and which is the bowling ball?  ALL objects in the universe have a gravititational attraction to ALL other objects.  The Earth pulls in the bowling ball, and the bowling ball pulls on the Earth.  There are 2 equal forces pointed in opposite directions, therefroe momentum is conserved (which is a physical LAW).
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A rocket doesn't have to fly a certain speed to leave the earth.  A rocket has an engine which means that it needs no minimum speed to get out of the earth's gravitational field.  Escape velocity is based on an object which will not be experiencing powered flight.  A rock thrown upward from the ground will need an initial velocity of 11.2km/s upwards to leave the gravitational field of earth.  A rocket needs to go just fast enough to continue moving (assuming a VERY large amount of fuel to continue engine burn for this duration).
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I was want to make something abundantly clear,\nTHERE IS GRAVITY IN SPACE! (despite what "keelahkat" says).\nGravity is a force of attraction acting between two masses at a distance...any distance.\n\nThe only way one would experience true "zero gravity" would be to travel an infinite distance away from all objects in the universe with mass.
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it's a piece of matter moving through space. or did i not get your "question"?
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The earth is surrounded by air approximately up to 200 km.\n\nThe space is surrounding the earth in all direction.\n\n Any object thrown or moving with a speed of 11.2km/s (25053.7 miles /hour) will escape from the gravitational pull of earth and will not return to earth.\n\nIf the speed is less than this value, the object will move in a circular path around the earth.\n\nOur planes are moving very slowly compared to that speed. Therefore, they cannot escape into space. If they have a constant speed they will be circulating the earth with a particular radius around the earth. \n\nIf a plane is flying (with a constant speed) at a height h from the ground of a city, after certain hour it may fly over the ground of another city. For the people in that city the plane will be flying at the same height h.  Since the earth is a globe, through out the globe, the plane will be flying at the same height. The height from the ground increases if the speed of the plane increases.
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There are plenty of good websites that answer this question, for any knowledge level. The concept is complex enough that you won’t get a meaningful answer here.\n\nIn horribly oversimplified terms Relativity simply states two things.\n\nOne that there is no universal ‘at rest point’, it all depends on how you choose to define it. You sit in a car doing 100mph and I stand beside the road. Normally we assume that you are in motion and I am at rest. Relativity states that we can just as accurately say that you and the car are at rest and I am moving at 100mph. Alternatively, we normally believe that the Earth orbits the sun and the Moon orbits the Earth. Relativity states that it is just as accurate to say that the Earth orbits the moon and the sun orbits the Earth, or we could say that we all orbit some imaginary point in between all three. It is all a matter of choice what we define as being the fixed point.\n\nThe second is that the speed of light is constant regardless of whether you are at rest or moving, and regardless of how fast you move. If you are sitting in a car doing 9/10 of lightspeed and are going past me standing still beside the road and we both look at exactly the same light beam shining down the road we will both see that light beam travelling away from us at exactly the speed of light relative to both of us. You don’t see it slowed down just because you are travelling almost as fast as it is. It will move away form me just as fast as it moves away form you.\n\nThose are the basics, and they aren’t all that hard to understand, even if they don’t seem to make much sense. What Einstein did was sit down and think really hard about the logical consequences of those two points.\n\n\n>>>>>>also is it true gravity on sun is greater than earth?\n\nYes.\n\n>>>>>if it is so ,sun would have had sucken all planets\n>>>> in it!!\n\n\nNo. Just as the Earth doesn't suck the moon in despite having much higher gravity.\n\nThe planets orbitthe Sun. In simple terms that means they are constantly falling around the sun in a ciruclar pattern.\n\nThe best way I have heard this described for the layman  is to imagine yourself throwing a heavy weight like a shotput. You could only throw it a few metres. Now imagine standingon the roof of a house and throwing that same shotput. This time it will go much further before it hits the gorund. Now go to the top of a rally high cliff and throw it. This time the shotput will travel for 20 or 30 metres before it hits the ground.\n\nThe higher you go the further somehting thrown will travel before it hits the ground. And if you go high enough the object will travel right around the world and back to where it starts before it hits the ground. It will continue falling forever. \n\nThe planets are doing exactly that WRT the sun. We are constantly flaling aorund the sun, but we can't be sucked in because we are falling from such a great height.
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Newton's first law states: A object at rest will remain at rest and an object in motion will remain in motion (at a constant speed and direction) unless acted upon by an external force.\n\nThis is also known as the law of inertia.
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at equilibrium gravitational pull between the earth and moon, or youll just be pulled toward one of them at a very slow and increasing speed, gravity never being lost.   Further out than that you will be pulled to the closest celestial body, meaning gravity still has never been lost.  but you will float.
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Sir Isaac Newton developed the universal law of gravitation.  This law was developed as an inverse square law (1/(r squared) where r is the distance between the two objects.). This law states that all masses are attracted to each other no matter how far away from each other they are.  The key to this law is that the force at which they pull at each other is not only inversely proportional the square of their distance apart but also dependent on their mass.  The equation is as follows:  F=G*((m1*m2)/(r squared) where F is the force created between them, m1 and m2 are the masses in kg of the objects and G is the universal gravitation constant which is 6.642 x10(-11) N M(2)kg(-2) (these last letters are the units it is in.)\nThe Force at which any object on earth has is simply the mass of that object times the acceleration at the surface which is 9.81 m/s(2) this force is the same as if you put the mass of the earth times that objects mass times the gravitational consant then divided by the square of the distance to the center of the earth.\n     As far as I am aware all field forces are inverse square laws which basically means that the closer an objects gets to another the attraction between then increases as the square of the previous force.  The closer they are together the stronger the force.\n     The string theory was devised to explain multiple dimensions and as a way to explain how subatomic particles can seem to be in more than one place at once.  It consists of a tube (string) that has a very small diameter but is infinitely long.  In this theory there are also an infinite number of these strings floating all over invisibly each containg multiple galaxies.  Hope this helps.