According to NASA, around 5,000 impacts were detected over an 11 minute period as the spacecraft was pelted by fragments of dust and ice. While sound waves can't travel through space, dust grains and larger debris breaking off the comet could be heard when they hit the probe’s protective shield. But when an earlier probe, NASA's Stardust, flew past comet Tempel 1 in 2011, it "heard" something much closer to real sounds. The electromagnetic sounds recorded by Rosetta on its cometary encounter required considerable processing to make them audible to human ears. (Image credit: ESA) Sounds of a comet encounter Saturn’s aurorae are the source of intense radio emissions, which have been converted into sounds. Later, the European Space Agency’s Huygens lander carried a microphone on its descent through the atmosphere of Saturn’s moon Titan. These include both the Venusian wind and the sound of the probe itself hitting the ground. The Soviet Union’s Venera 13, which landed on Venus in March 1982, was the first spacecraft to record sounds on another planet. Now we have a good idea what the Red Planet sounds like – but what about other places that have atmospheres thick enough to carry sound waves? Soon after, China released audio recordings made by its own Mars rover, Zhurong, reported at the time. 2021, it was the first to do so – but only just. When NASA’s Perseverance rover picked up the sounds of Mars in Feb. These are closely related to Saturn's aurora, which, like the Earth’s, occur around the poles of the planet. This eerie recording, displaying an amazing range of variations in both frequency and time, is derived from the planet’s radio emissions. More than a decade earlier, NASA released another striking audio clip, in this case made by the Cassini probe to Saturn. In a YouTube video from NASA’s Jet Propulsion Laboratory, these measurements were converted into sound waves, which brought out the dramatic nature of the change much more vividly than a conventional graphical representation. When NASA's Juno spacecraft crossed the boundary between interplanetary space and Jupiter’s magnetosphere in 2016, there was an abrupt change in the electric field measurements it recorded, according to NASA. Sounds of Earth's magnetosphere Sounds of Jupiter and Saturn Here we take a brief look at some of the otherworldly sounds that have been recorded. While ground-based radio telescopes listen in on signals originating vast distances away, sensors fitted to interplanetary spacecraft can "hear" radio waves - and other types of signal - in situ. A selection of audio clips can be heard on her website. Now a professor at Florida International University, Terenzi has applied similar techniques to other astronomical data, including radio emissions from the planets Jupiter and Saturn and the Earth's own magnetosphere. One of the pioneers of "acoustic astronomy" is Fiorella Terenzi, who used it initially as an aid to data analysis, and later as a form of science outreach.Īccording to Popular Mechanics, Terenzi began converting radio waves from distant galaxies into audio form when she was a student in 1987. One of the first uses of radio here on Earth was for sound broadcasting, and just as an audio signal can be carried by a radio wave, so radio telescope data can be transformed into audible sounds. (Image credit: NASA)Īnother promising source of outer space "sound" is radio astronomy. An artist’s impression of the Stardust probe, which recorded sounds of dust impacts from a comet.
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