Rosalind Franklin was a British chemist and X-ray crystallographer whose work was central to the discovery of the structure of DNA. Using a technique called X-ray diffraction, she produced 'Photo 51,' the most clear and detailed image of DNA ever taken at the time. This image provided the crucial evidence that DNA has a double-helix structure. Her data was shared without her knowledge with James Watson and Francis Crick, who used it to build their famous model of the DNA molecule. While Watson, Crick, and Maurice Wilkins received the Nobel Prize in 1962 for the discovery, Franklin had passed away from ovarian cancer in 1958 and was not eligible for the prize posthumously. In recent decades, her vital contribution has been widely recognized, and she has become a symbol of the often-overlooked role of women in major scientific breakthroughs.