Yup, all of this can be explain.The question is, how much time needed to unravel all of this?By that time earth is old enough to die.Yes, there is thing like another planet and space ship like star wars,if our science manage to get that far by the time earth die for good.The sad truth is, human are fragile creature that can only live in one small sphere compare to the vast universe.Maybe science can "upgrade" human to the point we can live even in space(even if it possible I think we need another thousand year to achieve it with human inside body pressure,oxigen etc2) or maybe we can revive our ancestor by transferring their soul to another man made human body,sorry if you think I speak crap.