Who Says Daughters Cannot Be Heros?

1768. Nanjing.

A girl studies astronomy in her grandfather’s library, in a world where serious scholarship was not supposed to belong to women.

By her twenties she’s written the book that explains why the moon actually eclipses — no gods, no omens, just geometry, illustrated with her own diagrams. She rewrites the era’s most difficult math textbook into something a beginner can actually use. She takes on students. Male ones. In an empire where women weren’t supposed to have opinions about the sky, let alone correct ones.

She was dead at 29. Most of what she wrote didn’t survive her.

This week: the astronomer and 18th-century rebel who proved you don’t need permission to reach for the stars. Can you guess who she is?