Before the battery died onboard the European Space Agency's comet-bound spacecraft Philae and threatened its mission, the "sound" coming from the comet was recorded and sent back to scientists.
The spacecraft completed its 10-year, 6.4 billion-mile historic journey and came to rest on Comet 67P/Churyumov-Gerasimenko Wednesday. By Saturday, its battery power had failed, but not before several pieces of data were sent back to Earth.
One such piece of data is what scientists are calling the comet's "song," captured as Philae approached the comet in flight. Take a listen:
According to Space.com, ESA officials say the sounds are "oscillations in the magnetic field in the comet's environment." They explain that the human ear would not hear these sounds because they are "singing" too far below the frequencies a human can hear. Scientists are said to have increased the frequency produced by the comet by "approximately 10,000 for an audible rendering of the comet's tune." But scientists say the are not exactly sure how the sound is generated. "[T]he sound could be produced when neutral particles of the comet are sloughed off into space and electrically charged through ionization," the report states.
TruthRevolt has an alternate theory -- perhaps coffee has something to do with it: