They don't. Generally they propel themselves off of the walls of their shuttle or anything nearby. Yours truly,
Mervin DePervin
2006-12-20 04:56:43
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answer #1
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answered by Mervin DePervin 2
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First of all you shouldn't think that there's no gravity in space because there is. Astronauts aboard the space shuttle are often said to be in 'zero gravity,' but that's not really true. The force of gravity trying to pull them and the shuttle back to Earth is still operating, but at the same time the shuttle is moving at high velocity which is trying to throw it off into space. Gravity pulling down and the velocity trying to throw them out into space cancels exactly so that the astronauts float around inside the shuttle. To move around they push themselves off from the inner surfaces of the shuttle and drift off to some other location.
2006-12-20 05:03:19
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answer #2
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answered by Chug-a-Lug 7
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In the first place, there is gravity in space. All objects with mass exert a gravitational attraction on all other objects, at a rate that is proportional to the object's mass and inversely proportional to the square of the distance between said object and any other object. It is gravity that holds a spacecraft, like the shuttle, in orbit around the Earth. Objects in orbit are actually in a state of freefall, like a sky diver, except that they are high enough, and travelling fast enough, that they are essentially falling around the Earth.
Having said that, where have you seen astronauts "walking around" in space, except perhaps in movies? When you hear about the astronauts making a "space walk" that is merely a figure of speach, meaning they go outside the spacecraft and move around, either by pulling themselves along or by using directional jet devices. But they don't actually "walk." If you're talking about the astronauts walking on the moon, it was the moon's gravity, weak as it is, that allowed them to walk there.
2006-12-20 05:09:46
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answer #3
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answered by Jeffrey S 4
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There is gravity in space, otherwise the current crop of astronauts would be well on their way out of the solar system (since it was a night launch they'd be heading away from the sun). The gravity is exactly enough to keep them balanced in orbit. So they are falling under continuous acceleration.
Anway, they hold on to things and throw themselves across open spaces. Outside they either hold on or use small reaction jets if they are wearing the EVA gear.
2006-12-20 05:10:36
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answer #4
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answered by Chris H 6
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Gravity won't be able to be created. people won't be able to create something interior the organic experience of the be conscious. What people can do is simulate the impacts of gravity by way of centrifugal stress. yet there nevertheless could be a thank you to generate, produce, or stimulate gravity from what already exists interior the organic universe. in simple terms the thank you to probably do it extremely is a project that scientists attempt to come to a decision. we can could wait and spot.
2016-12-30 17:03:07
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answer #5
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answered by Anonymous
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There is gravity in space.
Actually, there is gravity everywhere in the universe. You cannot escape gravity, no matter where you are :)
2006-12-20 07:03:31
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answer #6
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answered by Anonymous
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they dont they float around,
2006-12-20 05:02:56
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answer #7
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answered by ral 4
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No, they don't walk, they float.
2006-12-20 05:01:35
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answer #8
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answered by Anonymous
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they don`t they float
2006-12-20 04:57:38
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answer #9
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answered by lily 4
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Newton's Third Law
A force is a push or a pull upon an object which results from its interaction with another object. Forces result from interactions! Some forces result from contact interactions (normal, frictional, tensional, and applied forces are examples of contact forces) and other forces are the result of action-at-a-distance interactions (gravitational, electrical, and magnetic forces). According to Newton, whenever objects A and B interact with each other, they exert forces upon each other. When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is:
"For every action, there is an equal and opposite reaction."
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
A variety of action-reaction force pairs are evident in nature. Consider the propulsion of a fish through the water. A fish uses its fins to push water backwards. But a push on the water will only serve to accelerate the water. In turn, the water reacts by pushing the fish forwards, propelling the fish through the water. The size of the force on the water equals the size of the force on the fish; the direction of the force on the water (backwards) is opposite the direction of the force on the fish (forwards). For every action, there is an equal (in size) and opposite (in direction) reaction force. Action-reaction force pairs make it possible for fish to swim.
Consider the flying motion of birds. A bird flies by use of its wings. The wings of a bird push air downwards. In turn, the air reacts by pushing the bird upwards. The size of the force on the air equals the size of the force on the bird; the direction of the force on the air (downwards) is opposite the direction of the force on the bird (upwards). For every action, there is an equal (in size) and opposite (in direction) reaction. Action-reaction force pairs make it possible for birds to fly.
Consider the motion of a car on the way to school. A car is equipped with wheels which spin backwards. As the wheels spin backwards, they grip the road and push the road backwards. In turn, the road reacts by pushing the wheels forward. The size of the force on the road equals the size of the force on the wheels (or car); the direction of the force on the road (backwards) is opposite the direction of the force on the wheels (forwards). For every action, there is an equal (in size) and opposite (in direction) reaction. Action-reaction force pairs make it possible for cars to move along a roadway surface.
2006-12-20 04:57:44
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answer #10
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answered by CPT Jack 5
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