Source: Fires of Creation, pg(s). 7
Androffa is a distant world, far removed from Golarion yet similar in many ways, and forever linked in history by the crash of the Androffan spaceship Divinity on Golarion's surface in the Rain of Stars.
Androffa shares many traits with Golarion. Similarly sized and both bearing intelligent life—not just humanoid, but human—Androffa also suffered an ancient cataclysm. Compared to Earthfall, Androffa's apocalypse led not to a dark age and the ascension of mortals to godhood, but rather the rise of technology and widespread disbelief in all gods.
This wrathful act itself drew the ire of even greater gods, who imprisoned the Shoal and rekindled civilization on Androffa.
Androffa and Golarion
In the years since Androffa's last great apocalypse, it has evolved into a world strikingly similar to Golarion itself, with even some of Golarion's own gods worshiped by its people.
Meanwhile, on Golarion, the remnants of the Divinity have slowly awakened over the centuries after its crash. Androids, robots, artificial intelligences, and aliens the Divinity transported through the stars have grown more active in recent years.
According to the foreword of The Divinity Drive, Androffa's similarity to Golarion is due to it being James Jacobs's home campaign setting and a precursor for much of the Pathfinder campaign setting.