Listening in to the universe

By translating electromagnetic waves into sounds we can hear the ‘silence’ of space

Sound waves are pressure waves, which cannot travel through a vacuum, so sounds can’t actually be heard in the cosmos, however what the universe is brimming with is electromagnetic radiation. We are all familiar with technology that converts radio waves into audible sounds, and similar equipment is being used to listen to what is going on in space. The human ear is so good at detecting audio patterns that, by listening to an audible version of the electromagnetic radiation received by telescopes, astronomers are able to identify information that might have otherwise been missed using visual data alone. Using radio telescopes, hissing can be heard as solar flares burst from the Sun, while the rhythmic spinning of a pulsar produces clicks like a metronome. Planets also produce their own radio signals…

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How It Works Book of Space (Digital) - 1 Issue, How It Works Book Of Space 8th Edition

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