Time and Space - Again!

chli
MemberChestbursterFebruary 10, 2018If we go the route that David created the thousands of eggs on LV-426, what must be deduced about the speed of a juggernaut?
It took David and Shaw about a year to reach Planet 4 in the juggernaut (and Shaw had to be placed in cryosleep). With engineers technically more advanced when it comes to space travelling, their ships must be able to travel very fast and over huge distances? Despite the juggernaut, most likely travelling many, many times the speed of light, it still took David and Shaw about a year to get there!
The best scenario would be that Planet 4 and Origae-6 is in the same direction as the Zeta2 Reticuli system. If they were in the opposite direction (or in a 90° direction) it would, most likely, be too far off for David (or an engineer) to get back in time since the happenings on LV-426 happened 18 years after the incidents on Planet 4. To get to Origae-6, it’s about another 8 years for The Covenant ship. After getting to Origae-6, that leaves, roughly, another 10 years for David to perhaps start a colony (of xenos), create the eggs (unless they aren’t already created on the ship) find a juggernaut, store all the eggs in the cargo hold, and get back to LV-426.
Still, according to my humble calculations, David (or someone else) would have sufficient with time to get from Origae-6 to LV-426 since it would take approximately 2 years for a juggernaut. That would give David about 8 years to experiment and other things to happen on Origae-6.
So, if there certainly are other questions in this scenario, time and space wouldn’t be a problem?
What do you think?