Why would gravity not work on air? Have you ever gone to the top of a mountain or higher elevation? You can notice the difference yourself in the air you breathe..

Air is made up off multiple gases. Each gas has a different 'mass' so the gases can lair up on each other.

Helium is a good example. That DOES escape the Earths atmosphere (due to low mass.)

Air is a homogenous mixture...

Air is a mixture of different chemicals. Not just 02 and CO2. They mix down at our level but split as you go up through the atmosphere (lightest up the top.)

So if I pop a helium balloon that helium travels off earth?

Yes : (

That's what I've found out over the years. As soon as a balloon is popped, that helium disappears off Earth.

it will rise until it'S density is equal to the air at the height. dunno how high, but pretty far up.

it it there get's agitated enough to reach escape velocity, it might leave earth. yes.

The gasses in the air have mass.

"practically zero mass" so your saying it has some :)

Air pressure at sea level is 14.7psi. This means that if you took a column of air one square inch wide that went all the way up through the atmosphere to space it would way 14.7 lbs.

Mwahahahaha :-D
Classical fish-doesn't-know-what-water-is.

Air is incredibly heavy. A cubic meter of air weighs about 1.3 kgs!
That is a lot.

Besides, gravity effects even photons, which really have zero mass.

If gravity is strong enough to hold the atmosphere against the earth then why does a helium balloon float away with ease? Gravity magically stopped working when it got to helium?

Buoyancy.

gravity did not suddenly stop for boats, yet they "float" on water.

Because it is lighter than the rest of the air. It floats just like a boat in water. Floating is just the denser material forcing the light material up.

So then at what point does gravity stop working? I thought gravity affected individual photons? But helium is too light?

Gravity doesn't stop working. Helium goes up the upper atmosphere. Then forces like the solar wind then come into play.

Gravity is pulling the helium down, the heavier air around the helium is pushing it up. The force of the heavier air is greater than gravity until the helium reaches a certain altitude where the air is thin enough that things are balanced.

Its kind of like holding an air filled object underwater - it will rise up until the buoyancy equalizes

Watch this and tell me your opinion

Just watch the whole videos :P

He goes over what gravity actually is, the rest of the video is very informative since it should be within a couple of months haha

Speed.

The moon has an orbital speed of about ~1km/s.

Get a cloud of air to the same speed (in vacuum, relative to the earth's center of gravity) and it would behave the same. (ok, not the same, the cloud would disperse, but, details).

You're right about the herd getting bigger but I believe we can beat it...

It's a shame his videos aren't more popular, he always raises the good questions and is pretty informative

Hahahaha I hear ya and agree very much

But I have hope, Trump is playing its role so far, he's having trouble but I think he can beat the deep state

He's been smug as all hell ever since his trip. Disrespected a bunch of peeps there, and the media completely dropping the russia story and even doing some not so flattering pieces on Clinton it looks promising

So weird! I was just thinking about vacuums and Earth's atmosphere last night. Had exact same question. I figured it's gravity that holds it all together. But super strange that we're thinking the same thoughts at the same time...

Ringed Mongoose to base, Ringed Mongoose to base; we got one that can see. Permission to shill????

the weight of the air around earth is about equivalent to 12 feet of concrete...gravity pulls it down. it is also a shield against radiation. but also the earths gravity holds the moon in orbit, and that is about 250000 miles away..so an atom of air at 250000 miles has to have a speed greater than the moon to get away from earth.

^{Mouseover or click to view the metric conversion for this comment}

The scientific explanation is that a vacuum by itself doesn't create a force. It's the atmosphere (air particles) that want to push themselves into the vacuum, due to the law of equilibrium. (Gasses of different pressure that aren't seperated will even out in pressure)

The fact still remains that at the edge of space, despite there being nearly no air pressure, there's still no physical boundry holding the air in. So even with the official explanation that "a vacuum doesn't suck", it still doesn't make sense.

If there is no physical boundry seperating space from atmosphere, what's preventing the air from flowing into space, even if there is nihil* pressure, it's **still more than 0 pressure (space).

And the anwser to that is magical gravity. And people say flat earthers are the ones grasping at straws lel.

Where is the force coming from to pull the air into space?

Gravity is the acceptable answer. It doesnt just stop, it gets thinner and thinner.

My question is what holds the Atmosphere onto the Earth

The Earth's magnetic field.

My post history has flat Earth for beginners links. It's true, Earth isn't a spinning ball flying 30km/sec in a random direction, and learning that won't only change everything for you but could end the NWO. The stars look like they spin around a dome, you feel no movement, there's no curve up on an airplane but you see ships go over the curve at ground level? You see Mercury and Venus in the middle of the night, hm? Neil Degrass Tyson is an actor, living a lie