John Lear is a pretty good scientist.
“And, given all the givens . . . hes been pretty meticulous in getting such things analyzed.”
So, he’s discovered a new element from some alien spaceship and no one except those who go to his websites know anything about it. A new element, discovered in that way, would make the cover of Scientific American. He doesn’t sound very meticulous to me, or he’d be sharing this in Science Journals.
In any case, he must know very little about physics or he’d know a spacecraft from the nearest star would have to travel thousands of years to get here.
Your ASSUMPTIONS are showing.
That is based on the assumption that we know everything about physics. I don't think that is the case.
It wasn't that long ago that the "sound barrier" was just that: a barrier.
You need to leave some "wiggle room" for things that are presently unknown to us. Perhaps those from out there have made a few discoveries we haven't. Thousands of credible people have seen these things. It is far more prudent to suppose that there is something we don't know rather than assume all of those people are in error.