I recently stumbled across a film that Bob Lazar made years back where he explains how ET craft can traverse massive distances without the barrier of time being a factor. I'm not a physicist and am not particularly edumacated, so I had to listen to his explanation (the film is about 40 minutes long) several times before it started to make sense to me.
In a nutshell---
time, as I understand it, is a function of gravity. If you take two identical atomic clocks and leave one at ground level (on earth) and put the other one in space where there is way less then when reunited back on Earth the clocks will no longer display the same time. To try and make this clearer, time is said to slow way down the nearer you get to a black hole (this is extremely cliff notes, but that's the gist of it). I'm sure some smart folks will roll their eyes at that, but I'm trying to be brief.
So, the gravity with which we are familiar with can be termed "gravity B" and it exists everywhere where there is mass (i.e., planet earth) and is inherent in all mass in the universe. As far as we know. It is a weak field which can be proved by a person jumping in the air. We thereby temporarily break the bond of gravity. Lazar states that there is another kind of gravity "gravity A" that holds the protons and neutrons of elemental atoms together and it is extremely powerful. This is fundamental nuclear force. As the explanation goes, the higher numbered elements in the periodic table, can be monkeyed with in a particle accelerator, such as CERN, and you if add a proton to the nucleus of an element it fundamentally changes the properties of the element and it becomes something different -- a higher numbered element and that's where things get hairy.
The point of all this is that it is postulated that this nuclear force can be manipulated to escape the nucleus of the atoms in certain higher elements and thereby be "accessible" to counteract the effects of Gravity B and "bend time" in the process to where it is imperceptible and there is no inertia. This is how light years of distance can be traveled in no time at all. The motive forces is a controlled reaction between matter and anti-matter, using gravity A to overcome gravity B which when cranked up can make a UAP disappear from view. Become invisible. What actually occurs is that they are no longer in the same time that the observers of the craft are. The whole thing is pretty deep, I think it is worth consideration, because it's a pretty important question and this answer does have some logic. It's not just "flying", it's time travel of a sort.
Forgive me for this flawed explanation and if it makes somebody curious then I recommend watching the clip and perhaps you will get more detail than I did while I was repeatedly listening while distracted with various projects. Some of it sunk in, but I'm not sure how much I missed or was missing from the film.
I don't know if it will pass scientific scrutiny, but, clearly, we are being visited by beings from a long, long way away and Lazar's explanation provides the best (only, really) explanation I have heard as to how this can be achieved. They have apparently mastered an aspect of physics that we have not.
For those unfamiliar, Lazar was hammered for talking about "element 115" years ago when that element did not exist. We can now create it, but is is extremely unstable and we haven't learned
how to stabilize it, but maybe the ETs have. If you look at a periodic table now you will see Moscovium, AKA element 115, along with several more through 118.
Lazar has been around for years and people aren't laughing at him quite as hard as they used to because shit he told us decades ago keeps being proved correct. I think it's possible he's got a
pretty decent handle on the concept of interstellar travel. He's likely not the only one, but he's the only one telling us about it, simply because he thinks it's important that we know. He's
risked his life to tell his story and we should probably listen to him.
Here he is:
View: https://youtu.be/-akoihqVwos