bummer

an experience that is irritating or frustrating or disappointing; "having to stand in line so long was a real bummer"

चांद पर भेजा जा रहा आदमी सौ साल पहले एक घुमक्कड़ विचार के रूप में माना जाता था|

sending man to moon was considered as a bummer idea before hundred years.