[jpizagno]

Fritz Zwicky discovered Dark Matter. Rubin thought she discovered Dark Matter, because she wasn't aware of Zwicky's paper written in German many years before Rubin's paper.

edit: I have a PhD in Astronomy, with a focus on Dark Matter, and I measured rotation curves of galaxies myself.

[david-gpu]

Wikipedia link for those who, like me, where unfamiliar: https://en.wikipedia.org/wiki/Fritz_Zwicky

[vo2maxer]

I have not read anywhere that she discovered Dark Matter but rather that her observations confirmed its presence as “first proposed by Fritz Zwicky in 1933 but rejected by most scientists.”

[1] https://www.nsf.gov/news/special_reports/medalofscience50/ru...