Battle of Aledra

The first major hostilities between inhabitants of the Golarion System and the Veskarium

The Veskarium invades the GolarionSystem, making first landfall on Triaxusand ravaging the mountaintop city of Aledra. Though a multiworld alliance manages to drive off the invaders, the ensuing "Silent War" with the Veskarium costs innumerable lives and prompts the formation of the Absalom Pact. Source: Starfinder Core Rulebook pg. 426.