The Known Unknowns - Lawrence M. Krauss

Our understanding of ourselves and the cosmos has advanced immeasurably over the last five hundred years of modern science, yet many fundamental mysteries of existence persist. How did our Universe begin, if it even had a beginning? How big is it? What's at the bottom of a black hole? How did life on Earth arise? Are we alone? Is time travel possible?These mysteries define the threshold of the unknown. To explore that threshold is to gain a deeper understanding of just how far science has progressed.... Zobrazit více