While you might think that a comet would be silent, given that it is flying through the cold vacuum of space, the European Space Agency would have you stand corrected. 

Not content with having achieved a scientific first by landing a probe on a comet, the ESA's Rosetta project has detected a sub human-hearing oscillation in the particles around Comet 67P/Churyumov-Gerasimenko. Magnet fields cause the comet to sing, which took ESA scientists completely by surprise.

For more on Rosetta's incredible voyage, hear Futureproof's interview with mission scientist Matt Taylor, and music fans can check the comet song below, with musicians invited to sample it in their own creations.