In the second book of this series, it has been discovered that the satellite that they are wandering around on is actually an honest to
goodness live sentient alien being, with a rather warped view of humanity through the electromagnetic dreck we spew out into the void.

So the human characters, and this creature called Gaea are antagonists, and the humans must deal with her mind. Who, exactly is
insane here though?

http://notfreesf.blogspot.com/2006/12/wizard-john-varley.html ( )

Part of Varley's Titan series ( )