Isaac Asimov's Foundation series consists of seven novels, and they were not originally written in chronological order. Here is the chronological order of events within the Foundation series:
01. "Prelude to Foundation" (1988)
Set in the earlier years of Hari Seldon's life, this prequel follows the mathematician's journey as he develops psychohistory—the science that predicts the future of large populations. As Seldon becomes a target of political intrigue on the planet Trantor, readers witness the foundations of the legendary Seldon Plan.
02. "Forward the Foundation" (1993)
This sequel to "Prelude to Foundation" continues the exploration of Hari Seldon's life. It delves into his challenges, triumphs, and the evolution of psychohistory. Seldon faces political and personal turmoil as he endeavors to lay the groundwork for the future Foundation and preserve knowledge during times of crisis.
03. "Foundation" (1951)
The original novel introduces readers to the concept of psychohistory and the establishment of the Foundation on the remote planet Terminus. Hari Seldon's predictions guide the efforts to shorten the period of chaos following the fall of the Galactic Empire.
04. "Foundation and Empire" (1952)
The second book in the trilogy explores the rise of the Mule, a mutant with unprecedented psychic abilities. His threat challenges the predictions of psychohistory and jeopardizes the Seldon Plan, forcing the Foundation to adapt to unforeseen circumstances.
05. "Second Foundation" (1953)
As the concluding book in the original trilogy, "Second Foundation" follows efforts to uncover the location of the elusive Second Foundation. The narrative intertwines with political intrigue, conspiracies, and a quest to safeguard the Seldon Plan.
06. "Foundation's Edge" (1982)
Set centuries after the original trilogy, this sequel follows Golan Trevize's quest to find the Second Foundation. The narrative explores the complexities of the galaxy and the ethical dilemmas faced by Trevize as he navigates through political landscapes.
07. "Foundation and Earth" (1986)
This direct sequel to "Foundation's Edge" continues Trevize's journey, exploring the mysteries of the galaxy's origins and the search for Earth. The novel delves into the enigma surrounding humanity's roots and the consequences of uncovering ancient truths.