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
buried alive ***
Would you like to jiggle, jiggle a kitten, or jiggle this kitten of Zork Random? (type RESTART, RESTORE, or QUIT):