Is there some evidence suggesting that humans are the Galaxy’s only intelligent species? Enrico Fermi thought so – and he was a pretty smart guy. Could he be right? In 1950, the famous physicist made ...

is the Fermi function. STM will measure both of these contributions, so summing the two and integrating over all energies gives: At cryogenic temperatures of ∼ 4 Kelvin at which most of our ...