We’ll have to wait a bit longer to see the first Mars helicopter lift off. NASA had originally aimed to conduct the first Red Planet flight of its Ingenuity helicopter—the first-ever powered flight on a world beyond Earth—on Sunday (April 11). “Our best estimate of a targeted flight date is fluid right now, but we are working toward achieving these milestones and will set a flight date next week,” NASA officials wrote in the update. “We are confident in the team’s ability to work through this challenge and prepare for Ingenuity’s historic first controlled, powered flight on another planet,” officials wrote. Its main task is to show that powered flight on Mars is possible, potentially opening up a new mode of exploration on the Red Planet.