Foundation and Earth, the fifth novel in Isaac Asimov's Foundation series, follows Councilman Golan Trevize, historian Janov Pelorat, and the Gaian woman Bliss on a quest to find the legendary planet Earth. Having mysteriously chosen Galaxia—a collective galactic consciousness—over the Second Foundation's plan as humanity's future, Trevize seeks Earth to justify his decision. Their journey leads them through long-forgotten worlds, including Comporellon, Aurora, Solaria, and Melpomenia, where they encounter dangers and collect clues. Accompanied by Fallom, a child from Solaria, they finally discover dead, radioactive Earth and meet R. Daneel Olivaw, who reveals profound truths about humanity's destiny.
