In the Courts of the Crimson Kings In the Courts of the Crimson Kings In the Courts of the Crimson Kings is a 2008 alternate history science fiction novel by American writer S. M. Stirling. The story takes place on the planet Mars in an alternate solar system where probes from the United States of America and the Soviet Union find intelligent life and civilizations on both Venus and Mars. The book is heavily influenced by the works of writers such as Edgar Rice Burroughs, Ray Bradbury, and Leigh Brackett, among others. It is a sequel to "The Sky People", which is set on Venus. Stirling later
Stability of the Solar System Stability of the Solar System The stability of the Solar System is a subject of much inquiry in astronomy. Though the planets have been stable when historically observed, and will be in the short term, their weak gravitational effects on one another can add up in unpredictable ways. For this reason (among others) the Solar System is chaotic, and even the most precise long-term models for the orbital motion of the Solar System are not valid over more than a few tens of millions of years. The Solar System is stable in human terms, and far beyond, given that it