You'll learn more about life crystals and an explosive canister. You'll find a red rod on the floor. There is a door. Go inside and find Maggie working there. Go back to the nexus.
Brink is revived.
Then use the red rod to open the door left to the column. You know the glowing panel in the command center is the tram control. You need to repair the lifeless crystal. You and Brink go to the museum. Brink will help you to open the weakened door.