Is it possible that this prequel actually happens in the far off future (wouldn't that be a kick in the head)?
I'm hoping the goon who wrote the synopsis was going for dramatic effect, but IMO this is cringe worthy
"Bound for a remote planet on the far side of the galaxy"
The Milky Way is about 120,000 LY in diameter. The earth is about 75,000 LY from the far side of the galaxy.
To contrast : Zeta Reticuli is approximately 39 LY from earth, and it took The Prometheus 2 years to get there.
If you want to tell me that a Juggernaut can travel tens of thousands of light years in a short period of time, I will buy it. But.. it would take the Prometheus 5000 years to travel that far. I don't see a colony ship of the same era doing any better. Keep in mind that there are only 28 years between the destruction off the Prometheus and the events in ALIEN.
disclaimer : tongue in cheek