I agree.
I watched one of those real science shows , not the one’s in the former History Channel.
It was said that the energy needed to traverse the distance just between the nearest star using an engine capable of light year travel was so immense that the ship couldn’t carry the bulk load of (nuclear fuel) and travel the distance.
I’m paraphrasing but that’s what I remember. It was just impossible as the physics as we know it.
And the alien people believe in the Roswell incident where a rancher picked up a few pieces of tin foil and turned it into an martian spacecraft.
Not really, maybe time is completely different for an alien race where a second to them is a million years to us or more likely they’ve found out how to use worm holes or other forms of time travel.
What we know science and physics wise is infinitesimal.