 To ensure accuracy, Anne consulted with a number of astronomers who planned and modelled the comet impact and subsequent consequences, this group included author Bill Napier, Harry Alm and YouTuber Scott Manley.A rogue comet that strikes Pern leads the Weyrleaders and Holders, contemplating a future where dragonriders are not needed in a Threadless world, to consider the creation of a new Star Craft made of dragonriders.The discovery by dragonriders F'lessan and Tai, after a brutal attack by large felines, of the draconic use of telekinesis, only strengthens their resolve to keep Pern's skies free of danger.