The Universe has made almost all the stars it will ever make

Is our light-saturated existence perhaps a little unusual? Somehow a galaxy that spans tens of thousands of light-years is intimately related to what is, in effect, a microscopic dot at its centre. Astrophysicist and director of astrobiology at Columbia University in New York, Caleb Scharf, explores in Nautilus the universal dilemma of light and its existence.