Singularity Sky is a science fiction novel by author Charles Stross, published in 2003. It was nominated for the Hugo Award for Best Novel in 2004. A sequel, Iron Sunrise, was published that same year. Together the two are referred to as the Eschaton novels, after a near-godlike intelligence that exists in both.The novel follows the ill-fated military campaign by a repressive state, the New Republic, to retaliate for a perceived invasion of one of its colony worlds.