Does A Song of Ice and Fire take place in The Thousand Worlds?

Question

Before writing A Song of Ice and Fire, George R. R. Martin had written a series of science fiction stories that ended up all taking place in the same universe later titled The Thousand Worlds.

Do the A Song of Ice and Fire stories take place in the same universe? Has George ever commented on this himself?

Answer 1

No

George R. R. Martin was asked this on his "Not A Blog" and has stated that the stories are not a part of The Thousand Worlds. The original question/comment is quite long but see the link if you want some more context.

Asimov and Heinlein, late in life, both seemed to feel the urge to merge all of their books and stories into one huge continuity.
So far I do not feel the urge. No, Westeros is not one of the Thousand Worlds.
_{Not A Blog, Last Year (Writing, Editing, Producing)}