Harvard astronomers have just sounded the alarm — 3I/ATLAS is now on a direct collision course with Mars, and NASA is officially on alert. The latest orbital data shows disturbing shifts that can’t be explained by gravity alone. If this impact happens, it could trigger massive dust storms, alter Mars’s thin atmosphere, and even affect future human missions. In this video we break down the astronomers’ warning, NASA’s urgent response, and why this interstellar object is unlike anything we’ve ever

Why we explore Mars—and what decades of missions have revealed