Playlist

What do we hear on Mars? NASA Recordings Playlist

The picture is good. But when the sound is not there, undeniably, something is really missing. And it’s something about Mars that persistence gives us thanks to the sounds that have been recorded for over a year on the surface of the red planet.

Over a year ago, NASA shared a file The first votes have been cast by voice vagabond Persevere as it moves across the surface of Mars. Bringing Mars exploration into a new era. Because besides the fact that hearing a machine rolling on another world is enough to give chills, the analysis of these sounds really interests planetary scientists. Especially for those who want to deepen their knowledgevibe The red planet and its interactions with the surface.

And so Perseverance, from the start of its mission, records hours and hours of votes. of which the researchers now offer a selection. Type of playlist Mars which intensifies the acoustic environment found on Mars. And it turns out most of the time it’s planet quiet. The sounds of nature are rare and extremely secret. With the notable exception of Wind. “The place is so quiet that we thought, at one point, that the microphone was broken”Paradoxically, the researchers when presenting their first results at a conferenceAmerican Acoustical Association.

Valuable scientific information

More seriously, the researchers were surprised by the sudden changes in the atmosphere of Mars. While the recordings seem fairly quiet, violent gusts can suddenly occur.

The Perseverance recordings also reveal that the soundscape of the red planet changes with the format of seasons. In winterWhen Carbon dioxide (KB2) freezes to the side of a file polar caps, the density of the atmosphere changes. The intensity of the sound varies by approximately 20%. and society2 It also softens high-pitched sounds with distance.

While NASA has expressed skepticism about the idea of ​​implementing audio recordings On Mars, persistence proves it was worth it. Although scholars believe that such recordings could be more informative about planets or… moons to a more intense atmosphere. Like Venus or Titan. There, the sound waves interact more strongly and propagate farther. Idea for future missions…

Interested in what you just read?