Between Saturn and its satellites recorded strange sounds
14 Juillet, 2018, 02:51 | Auteur: Therese Cote
New research from NASA'sCassini spacecraft's up-close Grand Finale orbits shows a surprisingly powerful and dynamic interaction of plasma waves moving from Saturn to its rings and its moon Enceladus. The perceptions appear out of the blue that the waves travel on magnetic field lines interfacing Saturn straightforwardly to Enceladus.
Researchers studying the Cassini data converted the recordings of plasma waves into an audio file that humans can hear in a process similar to the way radios translate electromagnetic waves into music that can be heard, reports NASA. At the end of the day, Cassini recognized electromagnetic waves in the sound recurrence extend - and on the ground, we can open up and play those signs through a speaker.
The result is the trippy sound file at the top of this story, which compresses 16 minutes of plasma waves into 28.5 seconds of out-of-this-world audio. Air or water can generate waves to carry energy, and so does plasma-the fourth state of matter- explains the release.
Ali Sulaiman, planetary scientist at the University of Iowa and a member of the RPWS team, added that Enceladus was a "little generator going around Saturn", which was a continuous source of energy, Popular Mechanics reported.
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Cassini used his tool recipesmenus wave (RPWS) to capture the sounds of plasma waves that move between Saturn and Enceladus, says Science Alert.
During the movement along the lines of the magnetic field, free electrons and ions in fractions of plasma are accelerated and radiate electromagnetic waves, which are called plasma.
Sulaiman is lead author of two papers on this discovery. In the course he had discovered a previously unknown interaction between Saturn and its satellite Enceladus.
Enceladus is a small, icy body but Cassini revealed that it was also active, with geyser-like jets spewing water vapor and ice particles from an underground ocean beneath the icy crust, NASA said. By comparison, the moon orbits Earth at a radius of 384,400 km. The waves were recorded two weeks prior to the deliberate crashing of the Cassini spacecraft into Saturn's atmosphere in March 2017. The recording was converted by the RPWS team at the University of Iowa, led by physicist and RPWS Principal Investigator Bill Kurth.
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