The Voyager 1 and 2 spacecrafts have travelled many billion kilometres since their launch, and sent back some very interesting data too [1]. Both Voyager 1 and 2 are equipped with the Plasma Wave Subsystem (PWS) which detects Electrical field components of plasma waves in frequency range of 10 Hz to 56 kHz. Many people believe (see comments under the Youtube-videos), that these mysterious sounds are messages of unknown civilizations, others just find it relaxing and interesting without any meaning. In my experiment I want to compare the sounds using correlation [4] to a common white noise like static radio noise or rainfall. Aim is to prove or disprove the randomness of the plasma waves.

{"references": ["[1] http://voyager.jpl.nasa.gov", "[2] https://www.youtube.com/playlist?list=PLKzoKueiKNwtP6wJF0Qa5Pn8EAtReMtcQ", "[3] https://soundcloud.com/nasa/sets/solar-system-beyond-sounds", "[4] https://www.mathsisfun.com/data/correlation.html", "[5] http://science.nasa.gov/science-news/science-at-nasa/2013/01nov_ismsounds/]", "[6] http://www-pw.physics.uiowa.edu/voyager/v1pws_interstellar_2014.html"]}

Created for a Digital Preservation lecture