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Scientists have found that Saturn sends plasma waves similar to Earth's aurora to Enceladus. They converted these waves into a sound that Earthmen can now listen to. (19459013) NASA / JPL-Caltech )
Saturn has a strange electromagnetic relationship with Enceladus, and scientists have captured fragments of this link in a short audio clip that observers on Earth can listen to.
Before NASA's Cassini probe plummeted into the swirling gases of Saturn in mid-September of last year, the interplanetary probe was hit by a particular interaction between Saturn's magnetic fields and Enceladus
travel between the gaseous giant and its sixth largest moon.
Enceladus interacts with Saturn
Among Saturn's 62 satellites, Enceladus is one of the most remarkable. Experts believe that this icy little world brings a lot of promise in search of extraterrestrial life. Under the rough surface of the moon, a warm ocean spews jets of hot steam and complex organic molecules into the atmosphere.
These clouds of hot vapor emanate from the surface of Enceladus and reach the ionosphere of Saturn. energies. Enceladus also has its own magnetic field, which brings more chaos to the fore.
However, it's not just Enceladus making a move. Saturn responds by sending a column of oscillating plasma through its magnetic field lines, which act as electrical circuits, to reach its rings and Enceladus
Saturn sings to Enceladus
In a new article published in Geophysical Research Letters astronomers demonstrated for the first time what the waves that come and go between Saturn and Enceladus look like.
These waves are actually plasma vibrations that resemble the vibrations of sound that travel in the air. Using the data collected by the Plasma Wave Science Instrument (RPWS) instrument aboard Cassini during the final days of the probe's Grand Final mission, scientists were able to observe the vibrations and convert them into an audible sound on Earth.
recorded on September 2, 2017, it is the first time that researchers have heard the vibrating pulsations of plasma circulating between Saturn and Enceladus
"Enceladus is this little generator that revolves around Saturn, and we know that it is a continuous source of energy, "says lead author Ali Sulaiman of the University of Iowa and the RPWS team. "Now we find that Saturn responds by sending signals in the form of plasma waves, through the circuit of magnetic field lines connecting it to Enceladus at hundreds of thousands of kilometers."
Scientists convert plasma waves into sounds
what scientists call auroral whistling. The name comes from the plasma, a soup of electrically charged particles that make up the spectacular aurora illuminating the north and south poles of the Earth. In the same way that the water and the air create waves to transport energy, the plasma too.
It is important to note that no real sound can be heard if one passes between Saturn and Enceladus. Sound is a wave that is carried by a medium, such as the air. It is only perceived as healthy once it hits the eardrum. Because there is no air in the space, the waves sent by Saturn to Enceladus can not be heard.
However, electromagnetic signals can travel freely in space. This means that they can be converted to sound using the same artificial radio technology used to convert the signals from radio towers to car radios. Plasma waves are also electromagnetic in nature, allowing scientists to convert them into sounds that can be played and amplified by the speakers.
Scientists converted the recording of 16 minutes in 28.5 seconds of a strange hissing. its cosmic.
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