Please answer the following question: Facts: - signature: robert silverberg autograph.svg - period: 1955 -- present - caption: silverberg -rrb- -lrb- source karen silverberg , added july 2013 - subject: geography , history , nature - genre: science -rrb- fiction , fantasy , anthologies -lrb- as editor - pseudonym: dozens - birth date: 15 january 1935 - name: robert silverberg - nationality: american - image: file : robert silverberg otrs.jpg - birth place: brooklyn , new york city - occupation: novelist , short-story writer , editor Based on these bullet points, write a short biography describing the life of robert silverberg .
A:
robert silverberg -lrb- born january 15 , 1935 -rrb- is a prolific american author and editor , best known for writing science fiction .he is a multiple winner of both hugo and nebula awards , a member of the science fiction and fantasy hall of fame , a grand master of sf .