The Game of Stars and Comets - Tapa blanda

Four novels of rapid-fire interstellar adventure, set in a common universe, by the Grand Master of the form: - The X Factor: Only Diskan Fentress's mutant powers had a chance of stopping the looting of his new world.- Voorloper: Three those survivors

Called "one of the most popular authors of our time" by Publishers Weekly, Andre Norton is a legend in science fiction, and was one of our greatest storytellers. She wrote science fiction novels for five decades, beginning with the now-classic novel Star Man's Son in 1952. Many of today's top writers, including David Weber, Eric Flint, C.J. Cherryh and Joan D. Vinge, have cited her as a primary influence on their own work. She was Guest of Honor at the 1989 World Science Fiction Convention, and has received the Grand Master award from the Science Fiction Writers of America and the Lifetime Achievement Award of the World Fantasy Convention. She was astoundingly prolific, with over thirty books in her celebrated Witch World series alone. She introduced three generations of SF readers to SF and fantasy, both through her critically acclaimed YA novels and her adult works, and remains one of the most popular authors in both fields. She died in 2005.