The darkness thickens. Picture yourself wading in the ocean, the water illuminating you in its reflection. The jetblack void stretches out above and below you: the infinity of the dark heavens rises far overhead, while the inky depths of the nocturnal ocean undulate underneath. In the dark, little is discernible in the distance, leaving visible the oscillating reflections. You could dive head first into that glittering surface, but there’s no containing it, no holding it, no taking it. It is merely a temporary reflection of reality. Within that sparkling ocean, everything is a fleeting, transient, and ephemeral copy of an ideal form that resides outside of space and time, permanent and imperishable. The allegory of the cave and reality’s elusiveness. The more our knowledge expands, with researchers exploring natural phenomena, elementary particles and wavelengths in a constant search for the essence of life, the more we realise how little we actually know. Mythical thinking makes way for realism. Today’s greatest scientists stress how little we understand of our world, especially when it comes to the cosmos. Enveloping us is deep, dark pitch-black space.