If our understanding of physics is correct interstellar travel is basically impossible. There is also a strange situation that arises. Let’s assume a alien species could build a multi-generation ship that could sustain it self for centuries. This ship takes off for Earth with the intention of arriving in 500 years. 200 years later the same society can now build a ship that can get there in 50 years. This means that entire first ship was useless and everyone on board wasted their lives as the second ship will make a round trip while the first ship still has 200 years to make the first leg of its journey.
“If our understanding of physics is correct interstellar travel is basically impossible.”
Actually, it might surprise you to know that physics has advanced since 1925. It surprises me that in 2023 any intelligent person exists who isn’t familiar with the Einstein-Rosen bridge work and similar constructs, all operating consistent with the laws of physics and logic.
Interstellar travel is simply outside our ability for now. 120 years ago so was powered flight.
Things change.
Interstellar travel will require wormholes also known as portals.
Folks who claim to have communicated with aliens say that both natural and artificial versions of this exist...
now....
here...
and elsewhere throughout the solar system, galaxy and in other galaxies.
They could all be crazy but if they are not then the “impossible” just became very possible.
Or their world blew up as soon as the first ship left.
Nah.
The second will catch up to the first and ‘rescue’ them from old technology.
Ok. Those objects are here. Thousands have seen them. Many witnesses are trained observers and known to be trustworthy. It just isn't reasonable to suspect they are lying or misinterpreting what they saw. Many believe in Jesus using scanter evidence.
Given that they are here, it is not sensible to hunt for reasons to suggest that they aren't here. The quest by intelligent people needs to be centered around what they are and how they got here.
Our technology is not even 200 years old at this moment in time. It isn't rational to think we have learned all there is to know about physics in that 200 years, particularly since discoveries and derivatives are still coming in. The only plausible explanation is that those objects aren't from here, and we have no idea where they came from or how they managed to travel from whence they came. It could be far away, or it could be inter-dimensional. We just don't know. Adamant adherence to explanations based upon what we know is primitive thinking.
Physical wreckage of those craft have been recovered. Too many reliable and well placed people have directly witnessed it. It is really poor judgement to believe it didn't happen just because it conflicts with our belief system or we haven't been personally given a briefing.