X Stands for Unknown
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 & Company in 1984.
Contents
- Physics
- *1 Read Out Your Good Book in Verse
- *2 Four Hundred Octaves
- *3 The Three Who Died Too Soon
- *4 X Stands for Unknown
- Chemistry
- *5 Big Brother
- *6 Bread and Stone
- *7 A Difference of an 'E'
- *8 Silicon Life After All
- Astronomy
- *9 The Long Ellipse
- *10 Change of Time and State
- *11 Whatzisname's Orbit
- *12 Ready and Waiting
- *13 Dead Centre
- *14 Out in the Boondocks
- Mathematics
- *15 To Ungild Refinèd Gold
- *16 The Circle of the Earth
- *17 The Armies of the Night
Reception
Reviews
- Review by Edward James in Paperback Inferno, #55