NASA scientists have cut down a year of Perseverance's audio recordings on the Martian surface to a five-hour playlist of the Red Planet's best hits. There is a new way to explore the Martian environment with the quiet sounds. Some theories about the way sounds travel on the planet have been confirmed by them. The audio from the rover was first published last year and it was not very pleasant to listen to. An analysis of the sounds and what they can tell us about how sound travels on Mars was published in Nature last month. Baptiste Chide, a planetary scientist at Los Alamos National Laboratory, told Gizmodo in a video call last year that audio heard on Mars would sound like it was coming through a wall. Chide thought the microphone was broken when he heard how quiet Mars was. The Perseverance rover landed on Mars in February of 2021 with a suite of technologies designed to find out if Mars ever hosted life before it was a planet. The rover came with two microphones, made from off-the-shelf components, to record the first audio data on Mars. One of the microphones on Perseverance is attached to the frame of the rover and sits above one of the wheels. The microphone is encased in mesh to protect it from the dust on the planet, which can be fatal to the craft. One of the main cameras that sits on an arm above the rover's frame has a microphone attached to it.
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The researchers found that the latter microphone picked up sounds of the wind blowing around the rover, while the former microphone picked up more sounds from the rover's activities. Even when the helicopter was over 300 feet away, the microphones picked up the whine of the helicopter.
Chide's team used a microphone to measure the speed of sound on Mars. The carbon dioxide-laden atmosphere of Mars was used to show how sound travels through it.
Mars has a thinner atmosphere than Earth. NASA scientists expected sound to travel slower on Mars. The sounds traveled faster than the noise.
The sound on Mars will change over the course of the year. During the Martian winter, carbon dioxide in the planet's polar regions will cause the sound to change. Stay informed. As long as Perseverance performs, we should be getting a more diverse portfolio of Martian mixes.
There are 16 minutes of Perseverance Rover going Kssst, Tiktik, and Pffft.
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