NASA scientists took a picture of a small hurricane that they observed on the surface of Mars, and were able to record its sound, a whirlwind that appeared in the form of a swirl of granules and dust when it passed directly, by a rare coincidence, over the Perseverance rover in the planet, which is equipped with a microphone that records only 3 minutes every two days.
And the US agency stated in a statement from it yesterday, Tuesday, that the passage of the whirlwind was a stroke of luck that lasted 10 seconds, which enabled it to do what it did not expect, which is to record the first sound of a whirlwind that appears in a world other than Earth, even though the vehicle that landed in February last year on a crater known as Jezero North of the Martian equator, ample evidence of more than 100 whirlwinds, known as the dust devil, swayed and danced on the planet’s dry surface.
Its height is 118 meters, its width is approximately 25
This audio recording made by the spacecraft’s microphones when the whirlwind passed near it for only ten seconds, “will help to better identify the Martian atmosphere and weather, along with pressure readings and time-lapse photography,” according to Al Arabiya.net summarizing what was reported by the “Times” newspaper. The British team announced the chief investigator of the vehicle’s monitoring and spectral sensing system, Professor Roger Wiens, who is active in this field with the American University of Purdue University.
The professor also said that, through the recording, it is possible to “see the pressure drop, listen to the wind, notice a little silence, and then hear again the sound of the passing wind at a speed of 40 kilometers per hour,” adding that the Martian winds push about 1% of the pressure at the same speed as the winds that will return to Earth. .. It is not strong, but it is sufficient to raise the particles of granules in the air to form a whirlwind, “as the one that was observed. Scientists estimated that its height was 118 meters with a width of approximately 25, and it passed at a speed of 5 meters per second.
However, focusing on wind speed alone may be misleading, because 1% pressure means that flying a kite in the Martian atmosphere requires winds blowing much faster than on Earth, so another statement from NASA explained that any future astronaut reaches The Red Planet wouldn’t have to worry about storms blowing into its antennas or living quarters, because these kinds of little whirlwinds form when warm air near the surface starts to rise and spin, and then no downsides at all.