What would we do as a civilization if we found evidence for intelligent alien life? How would we deal with it? Neil deGrasse Tyson explains why alien civilizations may be rare, even though life in general may be ubiquitous throughout the galaxy and beyond. Neil deGrasse Tyson also explains ...

TheFermi Paradox: Where is everyone? It’s become a legend of the space age. The brilliant physicist Enrico Fermi, during a lunchtime conversation at Los Alamos National Laboratory in 1950, is supposed to have posed a conundrum for proponents of the existence of extraterrestrial civilizations. ...