Citations for The Fermi Paradox: Where Is Everybody?

Sources

Tavares, Frank. "About Half of Sun-Like Stars Could Host Rocky, Potentially Habitable Planets." NASA, 29 Oct. 2020, shorturl.at/ic5Mt. Accessed 16 Feb. 2025.

"The Milky Way's 100 Billion Planets." NASA, 25 Apr. 2012, shorturl.at/KaRjd. Accessed 16 Feb. 2025.

European Space Agency. "How many stars are there in the Universe?" European Space Agency, shorturl.at/e5hlk. Accessed 16 Feb. 2025.

Adler, Doug. "The Great Filter: a possible solution to the Fermi Paradox." Astronomy, 20 Nov. 2020, shorturl.at/bGlhu. Accessed 16 Feb. 2025.

Crawford, Ian A., and Dirk Schulze-Makuch. "Is the apparent absence of extraterrestrial technological civilizations down to the zoo hypothesis or nothing?" Nature Astronomy, 28 Dec. 2023, tinyurl.com/zoohypothesis. Accessed 16 Feb. 2025.