Nasa on Monday released a sound recorded by a microphone on Mars, a first made possible by the American rover Perseverance, which successfully landed on the red planet last week.
In the clip, we can hear a shrill sound produced by the rover, but also clearly the Martian wind. ‘Yes, you have just heard a gust of wind on the surface of Mars, captured by the microphone and sent back to Earth,’ said Dave Gruel, in charge of this equipment for NASA.
These are ‘the first sounds recorded on the surface of Mars’, he added at a press conference. The American space agency also made the same sound heard but with the noise of the rover attenuated.
Perseverance took home two microphones, one of which is located on the SuperCam science instrument, an ultra-sophisticated shoebox-sized camera.
“We are very hopeful that we can continue to use these mics to capture sound,” said Dave Gruel. One of them can be used in particular to analyze the noise produced when the SuperCam, designed by the French, uses its laser to strike the rock.
The other microphone, which NASA hoped could record the sound during the landing phase, however, did not work at that time, she announced.
Previous missions had already attempted to send microphones to Mars, but never succeeded in fulfilling the objective.
NASA’s InSight robot, which arrived on Mars in November 2018, had recorded multiple seismic tremors, thanks to an ultra-sensitive seismometer, which the Terrans were able to listen to.
The frequency of the vibrations was too low for the human ear and the jerks too weak to be felt. The recordings had therefore been processed and accelerated to become audible thanks to a technique called ‘sonification’.
#NASA #releases #recorded #Martian #sound #time