The universe is filled with a plethora of sounds that often go unnoticed. From the rumbling of distant stars to the hum of cosmic rays, the unheard sounds of the cosmos are both fascinating and awe-inspiring. Some other synonyms for the unheard sound of cosmos include the whispers of space, the symphony of the universe, the hum of the infinite, and the melody of the celestial. Whatever you choose to call it, the sounds of the cosmos offer a glimpse into the mysteries of the universe and remind us of our small place in the grand scheme of things.