The atmosphere has no abrupt cut-off. It slowly becomes thinner and fades away into space. There is no definite boundary between the atmosphere and outer space. Three-quarters of the atmosphere's mass is within 11 km of the planetary surface. In the United States, persons who travel above an altitude of 50.0 miles (80.5 km) are designated as astronauts. An altitude of 120 km (75 mi or 400,000 ft) marks the boundary where atmospheric effects become noticeable during re-entry. The Karman line, at 100 km (62 mi), is also frequently used as the boundary between atmosphere and space.
2006-11-24 15:51:06
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answer #1
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answered by sobrien 6
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There is always a field effect of gravity for a "motionless" object (which is something that don't exist) unless you obtain enough momentum to defeat gravity of the Sun or Moon or Mars or Earth.
Technically things FLOAT at 100+ miles, but this is due to upwards and linera momentum and there are minute gravity effects.
You are not quite gravity free, but fee enough so any little motion sends you moving about.
I am not aware of any maping of curved space and warpings due to gravity wells.
The biggest gravity well is the sun and eventually Earth could fall into the sun (in billioins of years)
2006-11-24 16:53:33
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answer #2
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answered by Anonymous
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The International Space Station is 200 miles high.
It's not floating, it has to go 5 miles a second to avoid getting sucked in.
Around the world in 90 minutes..
2006-11-24 21:06:50
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answer #3
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answered by anonymous 4
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The average distance from the Earth to the Moon is 384,399 kilometres (238,854 mi), which is about 30 times the diameter of the Earth. At this distance, it takes sunlight reflected from the lunar surface approximately 1.3 seconds to reach Earth
2006-11-24 16:02:26
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answer #4
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answered by snissari 2
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Right after the exospher which after the stratoshpere that is after the thermoshpere and ofcourse after the atmoshpere.
2006-11-24 16:13:00
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answer #5
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answered by g1r2a3c4e5_korea 1
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space has no boundaries
2006-11-24 20:31:28
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answer #6
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answered by Andrew J 1
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