The Ingenuity helicopter, imaged on Mars by the Perseverance rover on Aug. 2, 2023. (Image credit: NASA/JPL-Caltech) NASA's Ingenuity Mars helicopter has gone incommunicado.Ingenuity's handlers lost contact with the 4-pound (1.8 kilograms) chopper on Thursday (Jan. 18), toward the end of its 72nd flight on Mars. "Data Ingenuity sent to the Perseverance rover (which acts as a relay between the helicopter and Earth) during the flight indicates it successfully climbed to its assigned maximum altitu...