I assume this would be dependent on an arbitrary boundary of particle density.
2006-10-16 09:09:37 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
At what altitude does there cease to be 1000 gas particles per cubic meter, for example.
2006-10-16 09:21:59 · update #1
Wikipedia has this information.
http://en.wikipedia.org/wiki/Earth
It's in the middel of the right panel.
2006-10-16 09:22:21 · answer #1 · answered by BigEyedFish 6 · 0⤊ 1⤋
Outer space is usually considered to start at 100 kilometers up. The space shuttle does not experience significant reentry heating until lower than that. But at that altitude there are still 12 million particles per cubic centimeter, or 12 billion per cubic meter. Even interplanetary space has 5 particles per cubic centimeter, or 5,000 particles per cubic meter.
2006-10-16 17:24:18 · answer #2 · answered by campbelp2002 7 · 1⤊ 0⤋
Yes, it is dependant on an arbitrary boundary... altitude. So at what altitude?
2006-10-16 16:17:28 · answer #3 · answered by Telesto 3 · 0⤊ 0⤋
Take any globe..on it there is a layer of shellac to preserve the colours.
The shellac is the layer of Atmosphere.
2006-10-16 16:55:41 · answer #4 · answered by froggen616 2 · 1⤊ 0⤋