2006-06-27 15:59:34 · 10 answers · asked by Chico Creek D 1 in Science & Mathematics ➔ Astronomy & Space
Because Earth's gravity is holding our atmosphere around the Earth. The planet Mars used to have a significant atmosphere billions of years ago but because Mars is much small than Earth and also has less gravitational force, it's atmosphere escaped into outer space.
2006-06-28 10:30:11 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Our atmosphere is held in place by Earth's gravity. It's thought that Mars probably had a much denser atmosphere at one time, but because of its much lower gravity that atmosphere has no mostly drifted off into the vacuum of space.
2006-06-27 17:15:29 · answer #2 · answered by Chug-a-Lug 7 · 0⤊ 0⤋
Gravity holds it in place, the ozone layer and the magnetic field protects it and the Monn keeps everything the way it is. If the Moon were to leave its orbit for some reason perhaps our atmosphere would be stripped away, because of far more severe seasons. As long as the Moon is out there we should be OK.
2006-07-04 13:45:55 · answer #3 · answered by jorge f 3 · 0⤊ 1⤋
Gravity holds Earths's atmosphere down but since Mars's gravity is not so strong it only has 5% of its atmosphere left.
2006-06-28 00:09:56 · answer #4 · answered by Eric X 5 · 0⤊ 1⤋
Gravity keeps our atmosphere from drifting off into space. Atoms and molecules would have to reach escape velocity to leave the earth.
2006-06-27 16:03:34 · answer #5 · answered by Ethan 3 · 0⤊ 1⤋
Gravity is the main factor, but doesn't the earths' magnetic field also help by preventing the solar wind from slowly stripping it away?
2006-06-27 18:44:05 · answer #6 · answered by Anonymous · 0⤊ 1⤋
No, it may likely be icy by using severe chilly, notwithstanding it would not decompose, as there is not any micro organism or organisms in area to eat the body. that is preserved for likely tens of millions and tens of millions of years until eventually it crashed into something like a megastar or a planet.
2016-11-29 20:59:16 · answer #7 · answered by ? 3 · 0⤊ 1⤋
gravity holds it down
2006-06-27 16:02:42 · answer #8 · answered by Beaujock 1 · 0⤊ 1⤋
gravity holds is in place
2006-06-27 17:18:20 · answer #9 · answered by venus11224 6 · 0⤊ 1⤋
gravity and ozone layer
2006-07-02 05:08:10 · answer #10 · answered by grayrussiaboy 3 · 0⤊ 0⤋