> Audible hearing is based on the distribution of frequencies generated when solid bodies collide or rub. ... in Earth-like conditions, and useful in Earth-lik

> Audible hearing is based on the distribution of frequencies generated when solid bodies collide or rub. ... in Earth-like conditions, and useful in Earth-like conditions. Vibration of denser or rarified gasses could require other solutions to exploit, if it's possible at all > If life is that which can use an energy differential to create more order within it (an entropy pump) Now that's the ticket! Under this definition, I suspect most life in the Universe is not carbon based, but far more exotic (to us)