Rosalind Franklin Timeline

Rosalind Franklin 27

1920 Birth of Rosalind Franklin Born in Notting Hill, London, to a prominent Anglo-Jewish family Rosalind Franklin was born on 25 July 1920 in Notting Hill, London, the second of five children in a wealthy and socially active Anglo-Jewish family. Her father, Ellis Franklin, was a merchant banker involved in adult education and refugee relief, while her family placed a strong emphasis on public service and academic achievement. From an early age she displayed exceptional aptitude for science and mathematics, reportedly deciding on a career in science by her mid-teens despite some family skepticism about the path for a woman of her era.
1932 – 1938 Educated at St Paul's Girls' School Excels in science and languages at one of London's leading girls' schools Franklin attended St Paul's Girls' School in London, one of the few schools in England at the time offering girls a rigorous education in physics and chemistry. She excelled academically, particularly in the sciences and in languages, and won a place to study at Cambridge. Her time at St Paul's cemented her early determination to pursue a scientific career, a decision she made with unusual clarity and confidence for a teenager in the 1930s.
1938 – 1941 Studies Natural Sciences at Newnham College, Cambridge Reads chemistry and physics at one of Cambridge's women-only colleges In 1938 Franklin entered Newnham College, Cambridge, to study Natural Sciences, focusing on chemistry and physics. As a woman, she was permitted to attend lectures and sit examinations but Cambridge did not yet grant full degrees to women, a limitation she and her contemporaries endured despite matching or exceeding the academic performance of male peers. She graduated in 1941 with a result equivalent to second-class honours, and her time at Cambridge laid the foundation for her later expertise in physical chemistry.
1942 – 1945 Doctoral research on coal porosity Wartime work with the British Coal Utilisation Research Association leads to a Cambridge PhD During the Second World War, Franklin joined the British Coal Utilisation Research Association, where she studied the microstructure of coals and carbonaceous materials to improve fuel efficiency for the war effort. Her meticulous measurements of pore sizes and density using helium and other gases established fundamental relationships between coal's molecular structure and its physical properties. This research, which underpinned later work on carbon fibres, earned her a PhD from Cambridge in 1945 and established her reputation as an exacting experimentalist.
1947 – 1950 Trains in X-ray crystallography in Paris Joins the Laboratoire Central des Services Chimiques de l'État under Jacques Mering In 1947 Franklin moved to Paris to work at the Laboratoire Central des Services Chimiques de l'État, where she trained under crystallographer Jacques Mering. There she mastered the technique of X-ray diffraction analysis, learning to interpret complex diffraction patterns to deduce molecular structure, a skill that would become central to her later DNA and virus work. Her years in Paris were also personally formative; she thrived in French scientific and social culture and later described them among the happiest of her life.
1949 – 1950 Publishes foundational papers on carbon structure Research on graphitizing and non-graphitizing carbons shapes materials science Building on her coal research, Franklin published a series of influential papers describing the structural difference between carbons that graphitize on heating and those that do not. This work provided a physical explanation for why certain carbons could be converted into graphite while others remained amorphous, insights that later proved important to the development of carbon fibre technology. The papers established her as a leading authority on the X-ray analysis of disordered carbon materials.
1951 Tension with Maurice Wilkins over research roles A miscommunication about seniority sours her working relationship with a colleague Franklin's arrival at King's College coincided with confusion, stemming from an ambiguous offer letter, over whether she or fellow researcher Maurice Wilkins was to lead the DNA X-ray diffraction work. Wilkins had expected Franklin to work as his assistant, while Franklin understood she had been given independent authority over the DNA project, and the resulting friction shaped the atmosphere of the lab throughout her time there. This personal and professional discord contributed to Wilkins later sharing Franklin's unpublished data with Watson without her knowledge.
1951 Joins the MRC Biophysics Unit at King's College London Recruited by John Randall to apply X-ray diffraction to biological fibres In January 1951 Franklin joined the Medical Research Council's Biophysics Unit at King's College London, recruited by director John Randall to set up and improve X-ray diffraction studies of DNA fibres. She brought with her the rigorous crystallographic techniques honed in Paris, quickly improving the quality and resolution of DNA diffraction images produced in the lab. The move placed her at the center of the emerging race to determine the molecular structure of DNA.
1952 Captures "Photo 51", the defining X-ray image of DNA She and PhD student Raymond Gosling produce the sharpest diffraction image of DNA's B-form yet made In May 1952, Franklin and her graduate student Raymond Gosling used a finely calibrated X-ray diffraction setup to capture what became known as Photo 51, an exceptionally clear image of the B-form of DNA. The image's distinctive X-shaped pattern strongly indicated a helical structure, and Franklin's careful, methodical approach meant she recognized this while also cautiously withholding a definitive interpretation until more data was gathered. The photograph is now regarded as one of the most important images in the history of biology.
1953 Begins virus structure research under J. D. Bernal Applies X-ray crystallography to the study of plant and animal viruses At Birkbeck, Franklin joined J. D. Bernal's crystallography group and turned her diffraction expertise toward viruses, beginning with the tobacco mosaic virus. She quickly became a leading figure in structural virology, building a small, dedicated research team and securing funding from the Agricultural Research Council despite institutional obstacles, including opposition from Randall at King's College who sought to restrict her research scope.
1953 MRC report reaches Watson and Crick An internal progress report containing Franklin's unpublished DNA data is shown to rival researchers In February 1953, an MRC visiting committee report containing Franklin's detailed unpublished measurements and analysis of DNA's crystallographic structure was shown to James Watson by Max Perutz, and separately Maurice Wilkins showed Watson the Photo 51 image without Franklin's knowledge or permission. This data supplied crucial confirmation of key structural parameters that Watson and Crick used to finalize their double-helix model at Cambridge. The episode remains one of the most debated instances of uncredited data use in the history of science.
1953 Departs King's College for Birkbeck College Leaves an unhappy working environment to lead her own research group By March 1953, worn down by the tense working relationship at King's College, Franklin arranged to move to Birkbeck College, London, to work in the crystallography laboratory led by J. D. Bernal. As a condition of the move, she agreed to abandon further DNA research, redirecting her expertise toward the structural study of viruses. The transition gave her greater independence and set the stage for some of her most creative and productive scientific years.
1953 Watson and Crick propose the DNA double helix A physical model built at the Cavendish Laboratory incorporates Franklin's crystallographic parameters Using Franklin's unpublished measurements of the DNA helix's dimensions and symmetry alongside their own model-building approach, James Watson and Francis Crick constructed a physical model of DNA as a double helix in late February and early March 1953. The model elegantly explained how genetic information could be copied, resolving one of biology's central mysteries. Franklin's rigorous data was essential to validating the model's helical parameters, though this contribution was not made public at the time.
1953 Nature publishes the DNA structure papers Three companion papers, including one by Franklin and Gosling, appear together in the same issue On 25 April 1953, the journal Nature published three papers in the same issue: Watson and Crick's proposal of the double-helix structure, a supporting paper by Wilkins and colleagues, and a third by Franklin and Gosling presenting their X-ray diffraction evidence for the B-form of DNA. Although published together, Watson and Crick's paper appeared first and received the most attention, while Franklin's independently derived experimental evidence was framed as merely confirmatory rather than foundational. The arrangement of the papers has since been cited as an example of how credit was distributed unevenly relative to scientific contribution.
1954 Lecture tour and research collaborations in the United States Travels to Berkeley and other institutions, building an international scientific network In 1954, Franklin traveled to the United States for a lecture tour and research visits, including time at the University of California, Berkeley, where she discussed her virus structure work with American scientists. The trip broadened her scientific network and exposed her research to a wider international audience, reinforcing her growing reputation as a leading X-ray crystallographer independent of her earlier DNA work.
1955 – 1956 Determines the structure of tobacco mosaic virus Landmark papers reveal the virus's helical arrangement of protein and RNA Franklin and her Birkbeck team, including PhD student Kenneth Holmes and collaborator Aaron Klug, published a series of papers describing the helical structure of tobacco mosaic virus, showing how its protein subunits arranged around a central RNA strand. The work was recognized internationally, including a model displayed at the 1958 Brussels World's Fair, and established key methods for studying the structure of viruses more broadly. It remains regarded as some of the finest structural biology of its era.
1955 Secures funding to study poliovirus structure Expands her virus research program to one of the era's most feared pathogens In 1955, Franklin obtained a research grant from the United States Public Health Service to extend her structural studies to poliovirus, a significantly more dangerous and technically demanding subject than tobacco mosaic virus. She began assembling the specialized facilities and safety measures needed to handle live virus samples, continuing to build the reputation of her small Birkbeck group as a center of excellence in structural virology.
1956 Diagnosed with ovarian cancer Discovers two abdominal tumors while continuing an intense research schedule In September 1956, Franklin was diagnosed with ovarian cancer after doctors discovered two tumors during an operation. Despite undergoing surgery and subsequent treatments, she continued to work at a demanding pace, traveling to conferences and pushing forward her virus research even as her health declined. Friends and colleagues later recalled her remarkable determination to keep working through repeated hospitalizations.
1957 Continues research and publishing through illness Maintains an active laboratory program and travels internationally between treatments Throughout 1957, Franklin continued to direct her research group at Birkbeck, publish papers on virus structure, and even traveled to the United States for conferences during periods of remission. Colleagues described her as determined to complete as much of her scientific program as possible, mentoring students and advancing the poliovirus project even as her illness progressed.
1958 – 1965 Aaron Klug continues her poliovirus research Franklin's collaborator extends her work, later winning a Nobel Prize of his own Following Franklin's death, her close collaborator Aaron Klug continued and expanded the structural virology research they had begun together at Birkbeck, carrying the poliovirus and virus-structure work forward through the 1960s. Klug credited Franklin's rigor and insight as foundational to his own career, and he went on to develop crystallographic electron microscopy techniques that earned him the 1982 Nobel Prize in Chemistry, a recognition he explicitly linked to the collaborative work he had done with Franklin.
1958 Death of Rosalind Franklin Dies in Chelsea, London, at the age of 37 Rosalind Franklin died on 16 April 1958 in Chelsea, London, from complications of ovarian cancer, likely linked in part to her prolonged occupational exposure to X-ray radiation. She was 37 years old and had continued active scientific work almost until the end of her life. Her death came four years before the Nobel Prize was awarded for the discovery of DNA's structure, a prize she would not have been eligible to share posthumously under Nobel rules.
1962 Watson, Crick and Wilkins awarded the Nobel Prize The 1962 Nobel Prize in Physiology or Medicine honors the DNA discovery In 1962, James Watson, Francis Crick, and Maurice Wilkins were jointly awarded the Nobel Prize in Physiology or Medicine for their discoveries concerning the molecular structure of nucleic acids. Because the Nobel Prize is not awarded posthumously and Franklin had died four years earlier, her contribution went unrecognized by the committee, fueling decades of subsequent debate about the extent to which her experimental data had been essential to the discovery.
1968 Watson's "The Double Helix" mischaracterizes Franklin A bestselling memoir portrays her unfavorably, sparking later reassessment James Watson's 1968 memoir "The Double Helix" offered a personal, often unflattering portrayal of Franklin, referring to her dismissively and downplaying her scientific contributions and independence as a researcher. The book became a bestseller and shaped public perception of Franklin for years, though it later prompted friends, colleagues, and historians of science to publicly push back against its characterizations and to document her actual scientific standing more accurately.
1975 Anne Sayre's biography reclaims Franklin's legacy A close friend publishes the first major account challenging Watson's portrayal In 1975, Anne Sayre, a friend of Franklin's, published "Rosalind Franklin and DNA," the first substantial biography to challenge James Watson's portrayal and to detail Franklin's scientific rigor, independence, and the extent of her uncredited contribution to the DNA discovery. The book helped launch a broader historical reassessment of Franklin's role and inspired subsequent biographies and popular recognition of her work.
2003 Royal Society establishes the Rosalind Franklin Award An annual prize honors outstanding contributions to STEM by a woman researcher In 2003, the Royal Society established the Rosalind Franklin Award, an annual prize recognizing an individual who has made an outstanding contribution to any area of science, technology, engineering, or mathematics, with a particular focus on promoting women in STEM. The award formalized Franklin's place as a symbol of women's underrecognized contributions to science.
2004 Rosalind Franklin University of Medicine and Science is renamed A Chicago-area medical school adopts her name to honor her scientific legacy In 2004, the Finch University of Health Sciences/The Chicago Medical School was renamed Rosalind Franklin University of Medicine and Science, honoring her scientific legacy and commitment to rigorous research. The renaming was part of a broader wave of institutional recognition that emerged as historians increasingly credited Franklin's central role in the DNA discovery.
2019 ESA names its ExoMars rover "Rosalind Franklin" The European Space Agency honors her with the name of its Mars rover mission In 2019, the European Space Agency announced that its ExoMars rover, built to search for signs of past life on Mars, would be named "Rosalind Franklin" in her honor, citing her pioneering use of X-ray techniques to reveal hidden molecular structures as a fitting parallel to the rover's mission of uncovering hidden evidence beneath the Martian surface. The naming brought Franklin's legacy to a new global audience well beyond the scientific community.