As a teenager, Kristy Johnson thought she had her career all planned out. Raised in a small town in Indiana, she spent much of her childhood stargazing and mapping constellations. She dreamed of becoming an astrophysicist and pursued a rigorous academic path. After achieving top honors as an undergraduate, Johnson immediately began a PhD program in physics at the University of Maryland. Everything changed when she discovered her son, Felix, had a rare genetic disorder, one with only seven known cases in the world. The condition is associated with delayed…