https://en.wikipedia.org/wiki/The_Martians_(scientists)
"The Martians" was a term used to refer to a group of prominent Hungarian scientists (mostly, but not exclusively, physicists and mathematicians) who emigrated to the United States in the early half of the 20th century. [1]
Leó Szilárd, who jokingly suggested that Hungary was a front for aliens from Mars, used this term. In an answer to the question of why there is no evidence of intelligent life beyond earth despite the high probability of it existing, Szilárd responded: "They are already here among us – they just call themselves Hungarians." This account is featured in György Marx's book The Martians.
Paul Erdős, Paul Halmos, Theodore von Kármán, John G. Kemeny, John von Neumann, George Pólya, Leó Szilárd, Edward Teller, and Eugene Wigner are included in this group.