When you explore Prey’s Talos 1 Bridge via the Arboretum — during the end of "Danielle Sho," for example — you’ll start finding out bits of information about a shuttle with Talos 1 survivors on board. And it’s headed to Earth.
There’s only one decision to make in the "Shuttle Advent" optional objective — whether or not to blow up the shuttle. And there’s no right or wrong answer here. We’re not going to tell you what to do. We’re just going to walk you through finding the information to make your decision. Note that we did not say "make your decision easier."
From the Talos 1 Bridge, go up the stairs on the righthand side to find the Captain’s Loft. Check the captain’s computer first — there’s an email here that says that the shuttle left before the first alarm sounded.
Make your way over to the far side of the room from where you entered. The captain will be on the floor at your feet. Pick up her TranScribe and listen to her debate what to do about the shuttle. (Note: You can also loot the Jada Marks’ cabin keycard off of her body for use during "The Golden Gun.")
And that’s it. The shuttle might have left before the typhons made it to Talos 1. They didn’t find any mimics during the security scan (when they weren’t looking for mimics). And there were only 30 minutes between the shuttle leaving and the first alarms sounding.
Make your way to the console right next to where Captain Marks fell. There are only two buttons on it. One lets the shuttle land safely, possibly releasing mimics onto Earth. The other blows up a shuttle of clueless workers who were lucky enough to miss the horrors of the containment break.
And the clock is counting down.