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How NASA recorded the eerie Martian wind without a microphone



Martian plains of Elysium Planitia, and NASA unexpectedly recorded the sound of these extraterrestrial gusts.

Although NASA sent the InSight to Mars to study Mars' earthquakes and geology, the robot's supporters discovered that one of InSight's instruments picked up the sound of wind gusting against the machine's metal exterior, and they released the sounds on Friday. [19659002] "It's what it's like to be there," Don Banfield, to InSight scientist, said in an interview.

Beginning at the 1:10 mark in the video below, you can hear the Martian wind.

The specific The airborne sound pressure sensor is more formally called the auxiliary payload sensor subsystem. It's a weather-monitoring device. It's not a microphone. But it can act like one.

"It's much like what a normal microphone does," said Banfield.

Fender Telecaster guitar. These pressure changes are then picked up by a microphone and then turned into an electrical signal.

The pressure sensor, which is described as a low-frequency microphone, is designed to be used in the air pressure, and then transmit into electrical signals.

 Blue outline shows the location of the pressure sensor under a shield.

Location of the spacecraft's pressure sensor, under the shield. “/>

Location

"Wind or someone hitting a drum or a meteorite exploding in the atmosphere – all these make pressure changes in the air," explained Banfield.

In the case of the wind , the pressure sensor picked up the wind, but there's a catch. Martian environs. So it recorded the wind at a very low frequency – outside the range of limited human hearing.

However, it seems likely that they will hear the low-frequency sounds. NASA sped up about 2,000 seconds of wind in 20 seconds, which said that "it could survive on Mars," said Banfield.

pitch of the sounds 100-fold. Now, we can hear it.

NASA released the low-drone sounds derived from InSight's seismometer, which is intended to measure Martian earthquakes. These can be heard in the above NASA video, starting at around the 50-second mark.

But the seismometer measures vibrations as the wind blew against the robot's solar panels. The vibrations are sent to Earth. They are not listening to the train. It's a much more indirect way of picking up or interpreting sound.

In 2020, NASA wants to send its latest advanced rover to Mars with two actual microphones, specifically intended to record sound.

The microphones wants to record the sound of the rover descending through the Martian atmosphere – and if all goes smoothly – pick up the sound of the robot settling down in the Jezero Crater, an ancient, dried-up lakebed.

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