Happy birthday, Vera Rubin! She was born today in 1928, and was an American astronomer who found the earliest evidence for the existence of dark matter. . . . . . #darkmatter #science #matter #space #cosmos #verarubin #rip #physics #astronomy #stars #milkyway #galaxy #starstuff #spacestuff #scienceiscool #explore #discover #discovery 📷 @gettyimages