Star Travel ? - Never !

All should realize, that travel to any other star, even a close one, will absolutely never happen.
It all comes down to Distance = Speed x Time . Do the simple math.
Even at near light speed ( which is very unlikely ), the times would still be prohibitive. This is why, although intelligent space faring species likely abound throughout the universe, we are never visited by any.
Our fastest spacecraft is slower than light by a factor of well over 30,000 . A one way trip to our very nearest neighbor star would take about 140 millennia! Put in perspective, only 2 millennia would take us back to the height of the Roman empire, and 65,000 millennia would see the last of the dinosaurs.