The audio had to be tweaked significantly in order to bring out the sound of the helicopter, as it was virtually undetectable to the human ear in its original form.

Ingenuity is still busy on the surface of Mars, making more firsts and reaching new audacious heights in flight.

It's through that background hubbub that Perseverance picked up the sound of Ingenuity's helicopter blades, even though the two were 262 feet apart.

Helicopters of all sorts make that iconic, rhythmic sound of thumping in order to maintain flight and maneuver, all powered by aerodynamics and physics.