general relativity explains the warpage of space time but enormous amounts of gravity are required to do that and then the warpage is only gentle. not “local” and definitely not artificial, or manipulated to be propulsive
there are only so many elements on periodic table. no combination of them can do any of the fantastical things we can imagine
nothing produces the amount of (negative) energy required (bo such thing).
it’s fun to imagine but it’s just not realizable with what we know of physics and we know the bulk of it
we can. but our “cosmological constant” snd “hubble corrections” and what ever other fudge factors that go into trying to account for how we think things are expanding and moving in the universe are to some extent flawed
it’s pure theory and a bad one. theories of thing that can’t be detected or observed are bad theories.
they come up with this stuff to justify their work otherwise they would have no explanation. it’s bad science and a little disappointing actually
the models/framework has flaws. there are no exotic substances akin to what they fudged in to settle it.
Either way it proves we don’t remotely understand everything about physics. Whether fudge factor or genuinely can’t detect says the same thing, we don’t come close to knowing everything.
Umm no, your phone camera isn’t as good as you think it is, the objects fly, they are in the air and generally pretty distant, your zoom on an iphone is going to be grainy and poor at those distances.