None of us will ever make it to other galaxies, or even survive to see one do so without a significant push for greater achievement in biological studies.
The trek to such locations will require the capabilities to not only withstand the states of space, but to own a body capable of surviving the amount of time needed.
It is not a necessity to understand space travels but rather the functions and capabilities of extension to our own bodies that is required in order to partake in such endeavors. The fear of longevity and the trepidations towards immortality must be removed from our society in order to properly advance into the cosmos.
It is the knowledge for the transfer of energy, creation of physical forms, and therefore the transfer of consciousness in which we must first seek to gather.