2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/225893In this paper, we define a rectifying spacelike curve in the Minkowski space-time $E_1^4$ as a curve whose position vector always lies in orthogonal complement $N^{\bot}$ of its principal normal vector field $N$. In particular, we study the rectifying spacelike curves in $E_1^4$ and characterize such curves in terms of their curvature functions.11 pages onlyDifferential Geometry14H45; 14H50; 53C40; 53C50text