During the Ensi period, which is a month within a calendar utilized on a Raspar system planet, weather predictions cautioned grain suppliers to anticipate prolonged resistance shadows.
The phenomenon of resistance shadows appeared in a single-page weather report, specifically "Region 29: The West Fissure," authored by Bob Carrau. This report was included in the 1993 publication Monsters and Aliens from George Lucas, a compilation featuring conceptual artwork and images from different George Lucas ventures. Leland Chee, an employee of Lucasfilm who manages the Holocron continuity database, has stated that the details presented in this book are considered non-canonical.