The lander is covered with far more dust than it was in its first selfie, taken in December 2018, not long after landing – or in its second selfie, composed of images taken in March and April 2019. NASA’s InSight Mars lander took this final selfie on April 24, 2022, the 1,211th Martian day, or sol, of the mission. Some frequencies were clipped to bring out the helicopter’s humĬredit: NASA/JPL-Caltech/LANL/CNES/CNRS/ISAE-Supaéro Scientists made the audio, which is recorded in mono, easier to hear by isolating the 84 hertz helicopter blade sound, reducing the frequencies below 80 hertz and above 90 hertz, and increasing the volume of the remaining signal. Listen closely, though, and the helicopter’s hum can be heard faintly above the sound of those winds. It is further obscured by Martian wind gusts during the initial moments of the flight. Even during flight when the helicopter’s blades are spinning at 2,537 rpm, the sound is greatly muffled by the thin Martian atmosphere. With Perseverance parked 262 feet (80 meters) from the helicopter’s takeoff and landing spot, the mission wasn’t sure if the microphone would pick up any sound of the flight. NASA’s Perseverance Mars rover used its SuperCam microphone to listen to the Ingenuity helicopter on Apas it flew on Mars for the fourth time. NASA’s Ingenuity Mars Helicopter in Flightįor the first time, a spacecraft on another planet has recorded the sounds of a separate spacecraft.
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