Galaxy Mapper: The Luminous Discoveries of Astrophysicist Hélène Courtois

Introducing our luminous address in the universe—and the determined woman scientist who mapped it with her team.

Growing up in a small French village, Hélène Courtois had big questions about the world around her. Avidly, she observed the trails, roads, and water pathways traversing planet Earth; but her mind always wandered higher, toward the night sky. What would a map of “out there,” beyond the moon, look like? The question traveled with her to university, where curious Hélène—often the on...