A clear night sky filled with stars and constellations that shimmer with their own haunting luminescence? No. An agar plate containing many hundreds of microcolonies of bioluminescent bacteria. There is a subtle juxtaposition here, the stars,  defined by the inflexible physical  constants of the Universe, seemingly timeless and permanent familiars in our night skies, represented  with the  mutable and ephemeral  phenomenon that is biology.