Vera Rubin

Rubin's observations of galaxy rotation, made with her collaborator Kent Ford, established that stars in the outer regions of spiral galaxies orbit at constant speed rather than slowing with distance — the flat rotation curves now regarded as the clearest observational evidence for dark matter.

Rubin sustained a decades-long practice of writing letters of recommendation that explicitly chastised astronomy departments for having no women on their faculty, and monitoring conference speaker lists to demand more women be invited.

In 1950, told by her department chairman that he would present her thesis results at a conference under his own name because she was not yet an AAS member, Rubin replied, "No. I can go," and did.

This directly quoted refusal to cede authorship of her own work is the specific documented instance behind the profile's independent_thinking score. Independent Thinking

Denied access to the men-only bathroom at Palomar Observatory before women were formally permitted to use its telescopes, Rubin cut a skirt-shaped piece of paper, pasted it over the door's "Men" sign, and added "Women."

When a journal editor agreed to publish her 1962 paper but refused to credit her student co-authors by name, Rubin told him, "Then I withdraw the paper" — and he relented.

In 1964 Rubin gave up a ten-year teaching position at Georgetown because observing had become more important to her, then walked into the Carnegie Institution's Department of Terrestrial Magnetism — an all-male department with no female staff since 1904 — unannounced, to ask for a job.

Walking into an unwelcoming department with no prior application, rather than waiting for a formal process, is the documented basis for the profile's autonomy_need score. Need for Autonomy