Rosetta travelled for ten years over some seven billion kilometers to reach Comet 67P/Churyumov–Gerasimenko and deposit its lander Philae on the rock’s surface. In the days before the historic landing, Rosetta captured the comet's "song", a trippy vibrating sound that was in fact so far out of the the human hearing range that the volume had to be boosted 10,000 times to make it audible.



The vibrations were first picked up by Rosetta's magnetometer when it was about 100 kilometers away from the planet. According to the ESA blog, the agency's scientists hypothesize that the sound might be produced by the comet as it releases neutral particles into space and becomes electrically charged. However, they still don't know the precise physical mechanism behind the oscillations.

Rosetta and Philae also took stunning images of the comet and each other. And since space travel these days is not complete without some social media sharing, here's what we got on Twitter.