Summary:
- Vera C. Rubin was a pioneering American astronomer who made groundbreaking contributions to the understanding of dark matter, a mysterious and invisible substance that makes up a significant portion of the universe.
- Rubin's observations of the rotational speeds of galaxies led her to conclude that there must be a significant amount of unseen, or "dark," matter that exerts gravitational influence on the visible matter in galaxies.
- Her work on dark matter was instrumental in establishing it as a fundamental component of the universe, paving the way for further research and understanding of this elusive phenomenon.