yes. People don’t realize how great the distances are between stars, much less between galaxies.
Even if you imagine something so complex as ‘spooky action at a distance’ or quantum entanglement being able to get you from A to B instantly and across the universe, the problem is you have to have B out there and in place. And getting B out there will take a very long time.
As Lord Kelvin said in 1895, "heavier than air flying machines are impossible” (Wright Bros proved him wrong just eight years later).
Exactly. I tell people that all the time. Study even the basics of astronomy and the whole idea of UFO’s becomes impossible. Even if you could achieve the speed of light, which I believe even Einstein said was impossible , the distances between stars and let alone galaxies , as you point out , are staggering. If you even could achieve some means of inter stellar travel, before you’ve gone barely a quarter of the distance to your intended destination everything and everyone you left behind on Earth will be long gone.