Book by Isaac Asimov
'X' Stands for Unknown is a collection of seventeen nonfiction science essays written by Isaac Asimov. It was the seventeenth of a series of books collecting essays from "The Magazine of Fantasy and Science Fiction", these being first published between January 1982 and May 1983. It was first published by Doubleday &amp; Company in 1984.
Reception.
Dave Langford reviewed "X Stands for Unknown" for "White Dwarf" #79, and stated that "If you're scientifically literate you'll find the interesting bits buried in over-familiar stuff (though I always cheer Asimov when he stomps the crackpots). If not, you probably don't read books like this. That's showbiz."
References.
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