Build a machine that could defy gravity

[outlawedge23]

Hey, first off I want to say that I don't have much background with physics (that's the reason I don't know where to put this thread at, because I have no clue of what kind of physics this contains) even though I would love to. But anyways, I was thinking randomly the other day and I was wondering if there was a way to build a machine that could not only defy gravity and atmospheric pressure, but also take you around the world by not moving at all and letting the Earth revolve under you. I would like to hear some responses on some ways I could find information on this topic. I know it is probably insane in many eyes, but it just makes me wonder and I love learning more. Please help in any way and thank you for your help.

 

[russ_watters]

Welcome to PF.

The machine you are looking for is a balloon and it has already been used for this purpose. Understand, though, that the atmosphere mostly rotates with the earth, so it takes a lot longer than 24 hours to circumnavigate the globe this way.

 

[richardbruce]

they do launch geostationary satellites so a spatial satellite is probably possible as well and would avoid the effect of rotating atmosphere, but cost a lot more.

perhaps a balloon with some sort of propulsion to move in exactly the equal and opposite direction to the atmosphere hence not moving...