Wikipedia page about this book: https://en.wikipedia.org/wiki/Star_Born

Release date is 2006-05-27

Produced by Jason Isbell, Greg Weeks, Sankar Viswanathan,
and the Online Distributed Proofreading Team at
http://www.pgdp.net

"Star Born" by Andre Norton is a science fiction novel published in 1957. Three generations after colonists fled Earth and settled on the alien planet Astra, young explorer Dalgard Nordis discovers that humanity has returned from the stars. When a new Terran expedition arrives, both groups face a resurgent threat from "Those Others"—a malevolent species that once enslaved the planet. As ancient dangers awaken and loyalties divide, Dalgard must choose between two worlds while fighting for survival in a civilization's ruins. (This is an automatically generated summary.)

Original publication data not identified