“where is everyone????”

“where is everyone????” – Fermi’s question

The age of the universe and its vast number of stars has led some to suggest that unless the rare Earth hypothesis holds true, extraterrestrial life should be common.

In an informal discussion in 1950, the physicist Enrico Fermi questioned why, if a multitude of advanced extraterrestrial civilizations exist in the Milky Way galaxy, evidence such as a flying saucer or Von Neumann probe have not yet been seen.

Read More…. https://en.wikipedia.org/wiki/Fermi_paradox#Hypothetical_explanations_for_the_paradox