NASA's Perseverance rover once again has made history. The rover recorded the low-pitched whirring of the Ingenuity helicopter's blades. This milestone was achieved during the Ingenuity helicopter?s fourth flight and the space agency released the new footage on Friday.

???????? New sounds from Mars: Our @NASAPersevere rover caught the beats coming from our Ingenuity #MarsHelicopter! This marks the first time a spacecraft on another planet has recorded the sounds of a separate spacecraft.

???????? Turn the volume up: https://t.co/o7zG6mQJzx pic.twitter.com/s8Hm3dhcgg

? NASA (@NASA) May 7, 2021

The footage was shared in the official handle of NASA accompanied with a three-minute-long audio track. The sound you can hear is of Ingenuity helicopter's blades humming through the thin Martian air. If the individuals listen closely, the humming of the Ingenuity helicopter's blades can be heard faintly over the sound of the gusting wind. For this 108-second test flight, the helicopter flew southward and over a new airfield. The space agency released this unique video just days before the Ingenuity helicopter made its fifth test flight over a new airfield. In the video, Ingenuity is taking off, and its blades can be heard humming softly as they spin at nearly 2,400 rpm on the 872-foot roundtrip.

The new recording of Ingenuity's flight "will be a gold mine for our understanding of the Martian atmosphere," said David Mimoun, a professor of planetary science at Institut Superieur de l'Aeronautique et de l'Espace in Toulouse, France.

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