Life in the Universe:

The Fermi Paradox

In 1950, the Nobel Prize-winning nuclear physicist Enrico Fermi posed this question:

Where is everybody?

He was referring to intelligent extraterrestrial civilizations.

His question frames what has become known as the Fermi Paradox.

The logical sequence of assumptions leading to the paradox are outlined below.

Enrico Fermi (1901-1954 CE; Italian-American), circa 1943-1949.

Credit: United States Department of Energy; available in the holdings of the National Archives and Records Administration, cataloged under the National Archives Identifier (NAID) 558578 [link]

What can we look for?

Technosignatures of an advanced civilization.

Credit: Kander10 Designs/Forbes  [link]

Where is everybody?

Here are some possible answers to that question...