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 First edition | |
| Author | Nancy Kress |
|---|---|
| Cover artist | Bob Eggleton |
| Language | English |
| Series | Probability trilogy |
| Genre | Science fiction |
| Publisher | Tor Books |
Publication date | 2001 |
| Publication place | United States |
| Media type | Print (hardback & paperback) |
| Pages | 347 |
| ISBN | 978-0-7653-4355-0 |
| OCLC | 51638823 |
| Preceded by | Probability Moon |
| Followed by | Probability Space |
Probability Sun is a 2001 science fiction novel by American writer Nancy Kress, a sequel to her 2000 publication Probability Moon. It was followed in 2002 by Probability Space, which won the John W. Campbell Memorial Award.
The novel concerns a military expedition to the planet World, where aliens live who have developed a strange form of telepathy or collective unconscious, "shared reality", which causes piercing "head-pain" whenever "Worlders" attempt to hold strongly differing opinions. However, the expedition concerns a crash-landed alien artifact in the planet's crust which has uncharted powers, and may be the key to humanity winning a war against the "Fallers", a genocidal alien race.