If they are terrestrial, it is an important investigation. If they are extraterrestrial, it is an important investigation.
Interstellar travel is a big hurdle to cross but so were many things humans have done
We have evidence that satellites were in our skies before we could launch satellites:
Transient star-like objects of unknown origin have been identified in the first Palomar Observatory Sky Survey (POSS-I) conducted prior to the first artificial satellite. We tested speculative hypo...
