Today, German scientists released a two-second recording of the sound the Rosetta mission’s Philae lander made when it touched down on comet 67P/Churyumov-Gerasimenko’s icy surface. Philae landed on the comet, which is about 311 million miles (500 million kilometers) from Earth, last week (November 12, 2014).
The sound comes from sensors embedded in Philae’s three legs. The recording is part of SESAME, the Surface Electric Sounding and Acoustic Monitoring Experiment. Because its harpoons didn’t fire, Philae actually ended up bouncing twice and landing three times. This is a recording of the first bounce.
Scientists from the German Aerospace Center, DLR, which is responsible for SESAME, are analyzing the sound of the landing for clues about the comet’s surface.
After nearly 57 hours on Comet 67P/Churyumov–Gerasimenko, the Philae lander had completed its main science mission on November 15, 2014, when its batteries failed and the lander went silent. Read more.
Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. Today, as Lead Editor at EarthSky.org, she helps present the science and nature stories and photos you enjoy. She also serves as one of the voices of EarthSky on social media platforms including Facebook, Twitter and G+. She and her husband live in Tennessee and have two grown sons.