Vader is toast. Vader’s suit is designed to be airtight, which is the reason he could fly his special, non-pressurized Tie Fighter without any additional equipment or life support. Due to his injuries suffered when he lost his duel to Obi-Wan, he requires full functionality of the suit in order to survive any extended amount of time away from his “meditation chamber.” The hole in his helmet would cause oxygen loss and loss of strength, and would eventually lead to his death, notwithstanding the Alien onslaught. http://starwars.wikia.com/wiki/Darth_Vader’s_armor Wow. That was enough geek to last me until the next episode of Fringe.