What does space sound like ? Image Credit: NASA/JPL-Caltech/Space Science Institute
Back in 2017, Cassini picked up the sounds of plasma waves travelling between Saturn and Enceladus.
The otherworldly whooshing, whistling noise is the result of the spacecraft converting electromagnetic radiation (radio waves) in to audible sound using its Radio Plasma Wave Science (RPWS) instrument.
The audio is not a recording of actual sound as, due to the lack of a vibrational medium, sound waves cannot travel through the vacuum of space.
"Enceladus is this little generator going around Saturn, and we know it is a continuous source of energy," said planetary scientist Ali Sulaiman of the University of Iowa.
"Now we find that Saturn responds by launching signals in the form of plasma waves, through the circuit of magnetic field lines connecting it to Enceladus hundreds of thousands of miles away."
But this isn’t the actual phenomenon, right? It’s an audio representation of it? Could you just as well represent it as visible colors? I really don’t understand it, any assistance would be appreciated.
It's the actual electromagnetic emanations converted to sound, the same way a conventional artificial audio signal is converted to sound. We've had these sorts of recordings since Voyager.
If you are listening to the radio during a storm you will hear noise when there is lightning. It isn't actually the sound of the lightning you are hearing, but it is a direct result of the electromagnetic discharge of the lightning. Same thing here.
Please Login or Register to post a comment.