February 1, 2023

NASA’s Perseverance rover can pick up sounds from Mars; Listen

Published: 01/04/2022 17:47 / Updated on 01/04/2022 18:10

NASA’s Perseverance Rover can pick up sounds from Mars – (Credit: Reproduction/NASA)

The sounds of Mars captured by a NASA (US space agency) robot have helped scientists better understand conditions on the planet. Through the recordings, it was found that the speed of sound differs from the speed of the Earth and that in some seasons of the year the planet makes less sounds than others. (Listen to the sounds at the end of the story).

microphone perseverance rover – The robot that is part of the mission March 2020 perseverancewhose main goal is to study the astrobiology of the planet – to capture the sounds and from the recordings, the study determined that the speed of sound is slower on the Red Planet than on Earth, with deep silence prevailing most of the time.

studying – Published in the magazine nature This Friday (4/1) —Reveals how quickly sound travels through the extremely thin atmosphere, made up mostly of carbon dioxide, and what it might sound like to the human ear. In addition, scientists have used audio recordings to explore subtle changes in air pressure on the planet.

The big difference found is that the speed of sound on Mars is slower than the speed of Earth, with sounds typically traveling at 767 miles per hour (343 meters per second). But on Mars, bass sounds travel at 240 meters per second, while louder sounds move at 250 meters per second.

See more photos from the mission perseverance

  • NASA’s innovative Mars helicopter can be seen hovering during its third flight on April 25, 2021, as seen by the left navigation camera.
    clone / NASA

  • This composite of two images shows the hole drilled by the NASA rover probe during its second sampling attempt.
    clone / NASA

  • On August 27, 2021, NASA’s Perseverance rover captured this image of the tower laden with science instruments at the end of its robotic arm as it approaches the rock dubbed “Rochet.”
    clone / NASA

  • This illustration shows the position of the microphones in the persistence. The microphone on the mast is part of the SuperCam scientific instrument. The microphone on the side of the rover is designed to pick up the sounds of entry, descent and landing to engage the audience.

  • NASA’s Ingenuity helicopter unlocked its rotating blades, allowing it to spin freely, on April 7, 2021, the 47th Martian day, or Sol day, of the mission.

    clone / NASA

According to Sylvester Morris, an astrophysicist at the University of Toulouse in France, and lead author of the study, scientists believe that the robot’s microphone has broken, given the silence prevailing on the planet. “One of the most remarkable features of the audio recordings is the silence that seems to pervade the planet Mars,” he said.

For Baptiste Chedd, who was also involved in the study, Mars’ silence is a result of Mars having a thin atmosphere. “Mars is very calm because of the low atmospheric pressure.”

However, they explained that the pressure there changes with the seasons, so in the coming months Mars could become “more noisy”. “We are entering a high pressure season. Perhaps the acoustic environment on Mars is less calm than when we landed.”

Listen to the sounds of the planet: