In outer space, sound cannot propagate as it does on Earth because space is mostly a vacuum, devoid of air or any other medium necessary for sound transmission. Therefore, we cannot directly "hear" sounds from outer space.
However, there are various other ways in which we can detect and study celestial phenomena that are traditionally associated with sound. For example:
Electromagnetic Waves: Many astronomical objects emit electromagnetic waves across a broad spectrum, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. These waves can be detected by specialized telescopes and instruments. Although not actual sound waves, they carry valuable information about celestial objects and events.
Radio Astronomy: Radio telescopes can detect radio waves emitted by objects in space. These waves are converted into electrical signals and then processed and analyzed to study celestial objects. While we can't directly hear these radio signals, they can be converted into audible frequencies through a process called sonification, allowing us to listen to them in a way that resembles sound.
Vibrations and Mechanical Waves: Some astronomical events can generate mechanical waves or vibrations that can be indirectly detected. For example, certain types of star quakes or explosions can cause vibrations that are detectable as subtle changes in the star's brightness over time. Scientists can study these variations to understand the internal structure and dynamics of celestial bodies.
It's important to note that when scientists present space-related data as "sounds" or convert them into audio representations, it is done for the purpose of interpretation and communication. These representations are not actual sounds that exist in space but rather artistic or scientific interpretations of data transformed into sound for human comprehension.