It seems the bomb also transported the bar to the moon, and created an oxygen field around the bar. Unfortunately, when you leave the bar, you leave the oxygen field. You die of asphyxiation, and the Clangers eat your corpse.
*** You've been
pecked to death by 80 chickens ***
Would you like to veto, veto a soundboard, or veto this soundboard of Zork Random? (type RESTART, RESTORE, or QUIT):