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Two billion years after the Big Bang, the Universe was still very young. However, thousands of huge galaxies, rich in stars and dust, were already formed. An international study, led by SISSA-Scuola Internazionale Superiore di Studi Avanzati, now explains how this was possible. Scientists combined observational and theoretical methods to identify the physical processes behind their evolution and, for the first time, found evidence for a rapid growth of dust due to a high concentration of metals in the distant Universe. The study, published in Astronomy & Astrophysics, offers a new approach to investigate the evolutionary phase of massive objects.

Many books have been written about our cosmic origins: the creation of the universe 13.8 billion years ago; the Big Bang and all that followed. The denouement, presumably tens of billions of years away, remains comparatively mysterious. How does it all end? For that matter, does it all end, or can we keep on in our merry way indefinitely? In "The End of Everything: (Astrophysically Speaking)," Mack, a theoretical cosmologist at North Carolina State University, attempts to answer what might seem the most remote of scientific questions.