CBS News reported that the audio, which was shared in a video by NASA, captures the sound of a northwest Martian wind blowing at 10 to 15 miles per hour.
Two sensors picked up the vibrations: an air pressure sensor inside the lander and a seismometer on the lander's deck, awaiting to be deployed to the surface by InSight's robotic arm.
The noise is of the wind blowing against InSight's solar panels and the resulting vibration of the entire spacecraft. The seismometer recorded lander vibrations caused by the wind moving over the spacecraft's solar panels.
NASA's InSight lander touched down on the Red Planet Nov. 26, and since its arrival, the robot has focused on acclimating to its new environment on Elysium Planitia. It is just unbelievable to hear the first ever sounds from Mars. It will detect the lander's movement through the Mars surface, said NASA. Once this is done, the seismometer will collect vibrations that come from the planet's depths.
In a few weeks, it will be placed on the Martian surface by InSight's robotic arm, then covered by a domed shield to protect it from wind and temperature changes.
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You can hear more of the sounds here and listen to NASA's news telecon with a panel of scientists here. But InSight is not equipped with a microphone, rather, the sound was detected by sensors and a seismometer to measure sound waves.
"Capturing this audio was an unplanned treat", Bruce Banerdt, of NASA's Jet Propulsion Laboratory, said in a press release.
What's even more exciting about InSight's fascinating discovery is that the NASA team were not even planning on capturing the previously unheard wind. It's like InSight is cupping its ears.
"It's a really distant rumble that we're hearing", Pike said.
The first sounds ever recorded on Mars have been beamed back to Earth.
What did we just hear? The scheduled Mars 2020 Rover will have on board microphones for the objective of recording the sound of the landing.