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**Physics, Astronomy & Cosmology / Re: Can two infinities cancel each other out?**

« **on:**15/05/2019 19:47:22 »

(...)Earth has no edge or borders because of its shape like a ball, and yet it is finite. Is it at all possible that, regarding infinity, that it "has" borders, its just that we can never reach them because they are infinitely far away from us? Imagine a pebble infinitely distant from Earth, teleported into an unimaginably distant point in spacetime by technologically advanced alien race Sipons, of course. Who else? Is infinity, in this case, "distance" that is always the same? If distance of the most distant point of static infinity, relative to Earth, is always the same, then it represents some kind of a border, unless the pebble continues traveling, at an infinite speed, rather than just occupy the same point in spacetime. However, if the universe is constantly expanding, then infinity could have no borders, no edges, if the universe travels at an infinite speed. What you are proposing is some sort of static space, static infinity regarding its farthest point from Earth. This, I am afraid, nobody or very few could imagine, forwhy to be without a border, the universe "must" be "expanding", which cancels static infinity as such, but expanding at an infinite speed - so that the expanding infinity does not get compromised. Static infinity ought to have a border, an edge, while expanding infinity, expanding at an unimaginable, infinite speed, could be the real infinity here.

That means that I don't expect limits inside SpaceTime. I don't expect you to go out to the left to come in to the right.

I call that a limit, and limits presume borders neighboring to something else. It's Buck Rogers in my mind.

(...)

Am I talking out of my nose, or this, actually, makes sense?