Greetings, I was thinking about gravity on Earth. From what I know, if you are standing on the Earth's surface, all the mass of the Earth below you will pull you downwards (or more correctly, it warps the space above you which pushes you down snug to the ground). But then I thought about the atmosphere above you and how it tries to pull you upwards, in contrast to the earth's gravity. So my question is, if the Earth's atmosphere suddenly evaporated off the Earth in an instant (just assume this), we wouldn't find it more difficult to walk up stairs and such wouldn't we? And by how much? Do we know how much the Earth weighs and how much the atmosphere weighs, approximately? For now, lets disregard gravity from the moon and sun. Cheers.