Does Gravity pull on gases and if so why and how?

Answer 1

Gravity affects all things, energy and matter. A gas is one of the 4 forms of matter, so it is affected by gravity. Gravity is the attraction of 2 masses that is a force pulling them together. A gas of the same volume as a solid will generally have less pull on a solid than the solid has on the gas, but they both have pull. Because the molecular bonds in a gas are weaker than that of a solid, molecules at the far side of a gas are less likely to follow the molecules closer to the solid as they would in a solid: in absolute space, gravity would tend to draw the gas into a graduated band as you get farther and farther from the solid.

Gravity does not have an attracting, holding or condensing effect over gas and plays no part in holding down earth's atmosphere. There are no examples of gravity holding gas in a natural enviorenment and there are no experaments to prove gravity can attract, condense or hold gas. Earths atmosphere is surrounded by hydrogen a gas lighter then earths oxyigen and nitrogen atmosphere. Nitrogen and oxygen gas have an atomic weight heavier than hydrogen and cannot pass through the (hydrogen) lighter gas. Earth's atmosphere is held to earth in the same way the 90% hydrogen that occupies our solar system is held at the heliopause by a gas with a lighter atomic weight than hydrogen. This gas "X" is surrounding our heliosphere and keeping the hydrogen and hevier gases from expanding into interstellar space.

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