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Rosetta’s Plasma Consortium (RPC) has uncovered a mysterious ‘song’ that Comet 67P/Churyumov-Gerasimenko is singing into space. RPC principal investigator Karl-Heinz Glaßmeier, head of Space Physics and Space Sensorics at the Technische Universität Braunschweig, Germany, tells us more.
It is being sung at 40-50 millihertz, far below human hearing, which typically picks up sound between 20 Hz and 20 kHz. To make the music audible to the human ear, the frequencies have been increased by a factor of about 10,000.
The music was heard clearly by the magnetometer experiment (RPC-Mag) for the first time in August, when Rosetta drew to within 100 km of 67P/C-G. The scientists think it must be produced in some way by the activity of the comet, as it releases neutral particles into space where they become electrically charged due to a process called ionisation. But the precise physical mechanism behind the oscillations remains a mystery.
originally posted by: Shadoefax
I guess it answers that age-old question "If a comet sings in deep space and no one is around to hear it, does it make a sound?"
Apparently, the answer is "yes".
here is a vocaloid song made with most of the pulsar's frequencies from the voyager probe's pulsar map:
originally posted by: Nyiah
I just listened to this via a news article link, it's right up my alley for space noise. The Vela pulsar recording has competition now for my favorite space sound
using data from the Voyager program plaque which basically depicts a pulsar grid used to show the way to earth I extrapolated pulsar frequencies and used those for actual audio frequency beeps to represent those pulsars. Those oscillations are mathmatically correct and corresponding to their pulsars respectively. In the song I play a long non-oscilating beep first, followed by a repeated sequence of pulsars. The long beep represents the sun which as a normal star constantly emitts radiation unlike the pulsar which gives of periodical bursts, hence the oscillation. In the middle part of the song there is a number of packaged 'blips' which are relative range indicators. The first package indicates an extreme relative range in comparrison to the other packages and shows the distance of the sun to the center of our galaxy, the other packages show the relative distance of the pulsars to our sun. Using the pulsars which can be located via their frequency and the relative ranges our solar sytem can be located by process of trilateration.
The third part of the song a stair of beeps indicates the number of large celestial bodies orbiting our sun, the third beep is corrupted to indicate that the target of the map is that particular celestial body which is earth.