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If you are referring to where the Earth's gravity is no longer dominant, then you are talking about 13 million miles from your house. Yeah, that's a lot of rocket fuel. If you're
http://answers.ask.com/Science/Astronomy/how_many_...
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Now the geospace extends from Earth's atmosphere to the outer reaches of Earth's magnetic field whereupon it gives way to the solar wind of interplanetary space. Interplanetary space
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Outer space appears to be black, because there isn't anything in outer space to contemplate light. If there is nothing for the light from the sun, or stars to reflect off of, then
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There is no sound in outer space because it is a vacuum. Sound needs matter to travel through and vibrate in order for us to hear it. Air vibrates in our ears to make us hear sound,
http://answers.ask.com/Science/Other/why_is_there_...
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