Could humans ever travel to other galaxies within their lifetime? The immense scale of the Universe seems to prohibit such voyages, after all the nearest galaxy is so far away that it takes light itself - the fastest thing in the Universe - 2.5 million years to complete the trip.
When you get back home from your journey, 7 years have past for you but 12 years for everybody back on earth. If journeying to even the nearest star meant that hundreds of years passed back home. Remarkably, there is a trick that might allow humans to accomplish this feat.
This is one of the most mind-blowing videos on deep space travel I've ever watched. It really makes you think what is out there!
00:00 - Prologue
02:57 - A Journey to Alpha Centauri
11:27 - Returning from Distant Shores
21:12 - Onward to the End