We have been sending explorers throughout the solar system for many years. Those explorers contained many sensors onboard. Unfortunately, microphone was not one of them (Martian Perseverance rover carries two microphones). I would like to propose a series of small solar and planetary explorers that carry multiple microphones on board. There would be different types of microphones to capture different wavelengths. Even though, the space is vacuum and sound waves cannot travel in vacuum; the electromechanical sound sensors would pick up noise. The noise would be induced by the cosmic rays, gravity fields, and many more.
People are fascinated by the highly computer enhanced images captured by Hubble and James Webb space telescopes. This fascination can be extended by the surround sound of the universe. The microphones are more durable and can operate at more extreme conditions compared to video cameras. Additionally, it is much easier to capture surround sound and play it. Almost all sound systems are stereo and there are more surround sound systems on earth than 3D TVs.
Venus and Mars have atmosphere. Martian Perseverance rover has recorded the sound of Mars. However, it is in mono and microphone’s sensitivity is limited. Flying small planetary explorers can be built to explore Venus and Mars which would record the sounds of the planets as they explore them on air. Venus’ extreme temperatures and dust storms make it difficult for a camera to operate. However, the conditions are acceptable for surround high bandwidth sound recording. Additionally, sound recording would require less electrical and processing power compared to video capture. Allowing smaller and lighter flying explorers.
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