Böcker av Umberto de Angelis

Where is ET and how does he look like? The fast rate of discovery of exoplanets is telling us that millions of planets in the universe are most probably teeming with life. But the extremely small probability that life, once born, evolves into homo sapiens tells us that ET is most probably just a bacterium. A possible answer to the Fermi paradox ('where is everybody?') is therefore: they are all out there, on millions of planets, but bacteria do not build spaceships. Homo sapiens is alone in a universe teeming with life.