Is there really no air in outer space? and why?

Answer 1

There is air in outer space, it's just very little. Gravity doesn't suck things in all of the time, sometimes things rotate around something massive, like the planets do to the sun.
And some places in space have balanced gravitational pulls, or small gravitational pulls.
The pressure in space from air is about 1 x 10^-17 atm, which is 100,000,000,000,000,000 times less air, but that's still a lot of air molecules. Since space is about 2 Kelvin or -271 degrees Celsius, you can calculate that 1 Liter of space has about 367 million Hydrogen molecules. So if you took a 2 Liter bottle into space it would have 750 million air molecules in it.

Answer 2

the air on earth most likely evolved on this planet to be the mixture you breathe every day. see here...

http://en.wikipedia.org/wiki/Air

In "outer space", if you are a follower of the big bang theory ( see here http://en.wikipedia.org/wiki/Big_bang_theory) you will note that the universe started as a pinpoint of energy that expanded. That energy then coalesced and cooled which in turn formed galaxies, stars, planets, etc. those planets, if fate allows, develop their own atmospheres....

nrao kid and others who believe there is no gravity in outer space, why do you think the earth orbits the sun?

there most certainly is gravity in outer space. the force due to gravity drops off as the distance from an object increases (square of the distance actually) and all objects that contain mass have gravitational attractions to all other objects that contain mass. In the universe, there are countless stars, planets, comets, debris, etc. All of them have mass. that is, there are countless sources of gravity all interacting together. There is also something called "dark matter" that appears to be throughout the universe. dark matter also has gravitational effects. see here...http://en.wikipedia.org/wiki/Dark_matter

smilam. sorry dude the vapors in space are not air (with the exception of gases escaping earth and other similar planets -if there are any). Air is the mixture we have here on earth. Hydrogen atoms are responsible for the pressure in deep space being >0. see here
http://en.wikipedia.org/wiki/Vacuum

Answer 3

I agree with nrao_kid.

Any air that might get released into space would quickly spread out and get thinner and thinner until it became just isolated atoms here and there. But on Earth, gravity keeps the air trapped near the ground. The atmosphere is an ocean of air. The only difference between the water oceans and the air ocean is that the air ocean has no sharp upper surface. It just gets thinner and thinner as you go higher and higher, until, at 100 miles up, it is so thin as to be nonexistent, although there are a few molecules here and there up to several thousand miles above the ground.

Answer 4

The gravity of all the masses is what pulls every thing out of space and actually pulls even the air. Even the solar winds are very dispersed.

Answer 5

There just isn't that much stuff in the universe. The air you breathe is just a thin layer of gas surrounding our planet. The vast majority of the universe is empty.

Answer 6

m w is right

"air" is a combo of certain gasses many of which are extremely extremely rare in space and in places without life (such as oxygen, without plants, we would have FAR less of it).

There are gasses in space, about 99% (i think) of which is hydrogen. But in a vacuum, it spreads out as much as it can.

Answer 7

i believe air is in space but it has no oxegen and therfore yes there is air in space,

Answer 8

Air has mass, and mass is attracted to other mass -- planets like the Earth, by gravity. In the void of space, there is no gravity, ergo, no air can collect in space.

Did you really not know that?

Answer 9

bcoz earth's gravitational pull cant hold air after a specific
distance.
it can be calculated using

F= GMm
------- ,ETC.
R (SQUARE)
BUT RESUL DOES NOT COME AS IT SHOULD BE BCOZ
AIR DENSITY DECREASES WITH INCRESE IN ALTIDUTE

Answer 10

yes, asthere is no gravity to hold it near the earth.