A space shear represented a specific kind of spatial anomaly. These anomalies were located in proximity to atmospheric storms and could be found in space. The strength of some shears was sufficient to cause the destruction of a class-A cruiser. Consequently, to prevent potential annihilation, pilots would deviate from their planned routes by thousands of kilometers to steer clear of a shear.
While fleeing from Imperial starfighters above the planet called Acherin, Obi-Wan Kenobi, Ferus Olin, Raina Quill, Toma, and Trever Flume came across some space shears. These shears were situated at the boundary of an atmospheric storm. This particular storm encompassed an asteroid that later functioned as a sanctuary for those who survived Order 66 and the Great Jedi Purge.