For the first time, the National Aeronautics and Space Administration (NASA) has captured the strange sound of a meteor entering another planet’s atmosphere and crashing into Earth.
The Jet Propulsion Laboratory (JPL) said the recording, which was posted to YouTube on September 19, combines “seismic and sound waves” detected when a space rock collided with Mars on September 5, 2021. The sound lasts only about three seconds, begins with a hissing sound – the sound of a rock flying in the sky – and ends with several “whistle”.
“This is the first time that the sound of a meteorite impact has been captured when it occurs on another planet, and the sound may not sound as one might expect,” the tester reported.
“Three whistles” can be heard representing the palpable moments of the collision: the meteor enters the Martian atmosphere, when it explodes into pieces, and finally when it hits Earth. The strange sound is caused by an atmospheric effect also observed in deserts on Earth, where lower-intensity sounds arrive before louder ones. ”
Scientists said the meteorite — “a term referring to space rocks before they hit the surface” — exploded into at least three pieces, leaving three noticeable craters.
According to NASA, the InSight lander recorded the seismic waves and the agency’s Mars Reconnaissance Orbiter flew over the impact site and photographed “three dark spots on the surface.”
According to an article published on September 19 in the specialized magazine natural earth sciencesNASA has recorded four meteorite impacts on Mars since August 2021, “between 53 and 180 miles from InSigh.”
The four provoked calls tidal waves (Sort of earthquake) It measured 2.0 on the Richter scale, experts said.
“Scientists are wondering why no more meteorite impacts have been discovered on Mars,” NASA said.
“The red planet is close to the main asteroid belt of the solar system, which causes a large number of space rocks to impact the surface of the planet. Since the atmosphere of Mars is only 1% thicker than that of the Earth, more meteorites pass through it without to disintegrate.”
Since the installation of InSight in 2018, the InSight team said more impacts are likely, “neutralized by wind noise or seasonal changes in the atmosphere.”
The locations of such impacts “are the clocks of the solar system,” said the paper’s lead author, Rafael Garcia, of the Higher Institute of Electricity and Space, in Toulouse, France.
“Scientists can estimate the age of the planet’s surface by calculating the craters left by its impact: the more there are, the older the surface,” Garcia said in the statement.
Translated by Jorge Posada
This story was originally published September 20, 2022 at 0:37 pm.