Look up at the full moon on a clear night, and you’re gazing at a celestial monument to scientific achievement. The lunar surface bears the names of humanity’s greatest thinkers, immortalized in the craters formed by ancient impacts. Yet among the 1,586 named features on the Moon, only 31 honor women. These women scientists on the moon represent less than 2% of all named lunar features, a stark reminder of how recently women gained recognition in science.
Each lunar crater named after women tells a story of breakthrough discoveries, persistent determination, and barriers overcome. From Hypatia of ancient Alexandria to modern astronauts, these pioneers transformed mathematics, astronomy, physics, and space exploration. Their names now shine permanently on Earth’s nearest celestial neighbor, visible reminders that scientific genius knows no gender.
This Women’s History Month, we explore the remarkable women whose contributions earned them this astronomical honor. Their craters dot both the familiar near side and mysterious far side of the Moon, each one a testament to discoveries that expanded human knowledge and inspired future generations of scientists.
A Celestial Hall of Fame With Few Women
How Lunar Features Get Their Names
The International Astronomical Union (IAU) has governed the naming of celestial features since 1919. For lunar craters, the tradition began centuries earlier when astronomers like Giovanni Riccioli started assigning names to visible features. The convention established that lunar craters honor deceased scientists, scholars, explorers, and astronauts who made significant contributions to their fields.
The process isn’t automatic. Proposals must demonstrate the individual’s lasting impact on science. The IAU’s Working Group for Planetary System Nomenclature reviews submissions, considering factors like the significance of contributions, international representation, and whether similar names might cause confusion. Once approved, these names become permanent, surviving longer than any earthly monument.
The Stark Gender Gap
Of approximately 1,586 named lunar craters, only 31 commemorate women. This 2% representation reflects historical realities: for most of recorded history, women were systematically excluded from universities, scientific societies, and professional research positions. Many brilliant female astronomers and scientists worked without recognition, their discoveries attributed to male colleagues or simply forgotten.
The distribution across the Moon tells another story. The near side, visible from Earth and mapped earliest, contains 14 craters honoring women. The far side, invisible from Earth until photographed by spacecraft in 1959, features 17. This slightly higher representation on the far side reflects more recent naming efforts as attitudes gradually shifted toward recognizing women’s contributions.
Recent Progress and Ongoing Efforts
Most women-honoring craters received their names relatively recently. While male scientists like Copernicus, Kepler, and Newton have had lunar craters since the 1600s-1700s, many women’s names weren’t added until the 20th century. As awareness grew of women’s historical contributions and contemporary achievements, the IAU began approving more proposals recognizing female scientists.
Today, organizations and individuals continue proposing names of deserving women scientists for unnamed lunar features. Each approval represents not just historical recognition but inspiration for young women considering scientific careers, showing that their contributions will be remembered and celebrated.
Meet the Women on the Moon
Ancient Scholars and Early Pioneers
Hypatia (c. 350-415 CE)
The Hypatia crater, located on the Moon’s near side, honors one of history’s first documented female mathematicians and astronomers. Teaching in Alexandria, Egypt, Hypatia wrote commentaries on classical mathematical texts and built astronomical instruments. Her murder by a mob in 415 CE symbolized the destruction of Alexandria’s intellectual golden age. The crater bearing her name, approximately 41 kilometers in diameter, ensures this pioneering scholar’s legacy endures. Our hand-drawn Hypatia poster celebrates her famous quote: “Reserve your right to think, for even to think wrongly is better than not to think at all.”
Caroline Herschel (1750-1848)
Crater Herschel honors the astronomer who discovered eight comets and compiled comprehensive catalogs of celestial objects. Working alongside her brother William, Caroline became a pioneering astronomer in her own right, earning recognition from Britain’s Royal Astronomical Society. The 13-kilometer crater on the far side of the Moon commemorates her meticulous observations that advanced 18th-century astronomy.
Nobel Laureates and Physics Pioneers
Marie Curie (1867-1934)
The Sklodowska crater (Marie Curie’s maiden name) on the far side honors the only person to win Nobel Prizes in two different sciences. Her groundbreaking research on radioactivity, documented in her doctoral thesis “Recherches sur les substances radioactives”, established foundations for nuclear physics. The 127-kilometer crater befits her towering contributions to science.
Lise Meitner (1878-1968)
Crater Meitner commemorates the physicist who discovered nuclear fission. Despite her critical role in this breakthrough, her male colleague Otto Hahn received the Nobel Prize alone, one of science’s most notorious oversights. The 87-kilometer crater on the far side ensures history remembers her essential contributions to atomic physics.
Mathematicians Who Changed the Field
Emmy Noether (1882-1935)
The Noether crater honors the mathematician Einstein called “the most significant creative mathematical genius” since women’s higher education began. Her theorem connecting symmetries and conservation laws became fundamental to modern physics. The 67-kilometer crater on the far side represents her revolutionary impact on abstract algebra and theoretical physics.
Sofia Kovalevskaya (1850-1891)
Crater Kovalevskaya recognizes the first woman to obtain a doctorate in mathematics and the first female professor in Northern Europe. Her work on differential equations and mechanics advanced mathematical analysis. The 115-kilometer far side crater commemorates her persistence in pursuing mathematics despite pervasive discrimination.
Astronomers and Space Pioneers
Valentina Tereshkova (1937-present)
Although still living, Tereshkova has a crater proposed in her honor for being the first woman in space (1963). Her Vostok 6 mission made her a global icon, proving women could withstand spaceflight’s demands. While IAU typically honors only deceased individuals, her historic achievement may warrant exception.
Williamina Fleming (1857-1911)
Crater Fleming honors the astronomer who classified thousands of stars and discovered numerous nebulae while working at Harvard Observatory. Starting as a maid and becoming a renowned astronomer, her story exemplifies how talent overcomes barriers. The 106-kilometer crater acknowledges her stellar classification system still used today.
Why Lunar Recognition Matters Today
The small number of women on the moon isn’t just historical curiosity; it reflects ongoing challenges in achieving gender equity in STEM fields. While formal barriers have largely fallen, women remain underrepresented in physics, mathematics, and engineering. Visible recognition matters because it:
- Provides role models – Young girls interested in science need to see that women’s contributions are valued and remembered
- Corrects historical injustice – Many brilliant women worked without recognition; naming craters begins addressing this imbalance
- Inspires future scientists – Knowing their achievements might be remembered centuries hence motivates today’s researchers
- Acknowledges systemic barriers – The 2% representation reminds us how much potential was wasted by excluding half of humanity
Organizations now actively work to identify deserving women scientists for unnamed lunar features. Recent efforts focus on lesser-known pioneers whose contributions were overlooked or attributed to male colleagues. Each new crater name approved represents progress toward equitable recognition.
The stark numerical disparity also sparks important conversations. Why are there so few women? Not because women lacked ability, but because they faced institutional barriers that made scientific careers nearly impossible. Understanding this context transforms the 31 craters from mere names into monuments to persistence against systematic discrimination.
For educators, the women scientists moon craters provide tangible teaching tools. Students can locate these craters through telescopes or lunar maps, connecting abstract history lessons to visible celestial features. Each crater becomes a starting point for exploring that scientist’s achievements and the obstacles she overcame.
Celebrating Women Scientists Through Lunar Cartography
Our Women on the Moon poster set beautifully maps all 31 lunar features honoring women scientists. These two A2-sized prints show both the near side (14 women pioneers including Hypatia and Caroline Herschel) and far side (17 luminaries such as Marie Curie, Emmy Noether, and astronauts from Space Shuttle missions). Each crater is labeled with the scientist’s name and lifespan, making these posters both decorative art and educational resources.
Perfect for classrooms, offices, or home studies, these maps inspire conversations about women’s contributions to science while serving as functional lunar reference guides. The posters document not just the craters but the remarkable women whose discoveries in mathematics, astronomy, physics, and space exploration earned them this celestial honor.
Complement these maps with our Hypatia poster or Marie Curie’s original doctoral thesis to explore specific pioneers’ contributions in greater depth, creating a comprehensive celebration of women in science.
Looking Up, Moving Forward
Every time you look at the Moon, you’re seeing a permanent record of scientific achievement. Among those countless craters, 31 bear names of women who refused to accept that intellectual pursuits belonged only to men. From ancient Hypatia to modern astronauts, these pioneers proved that scientific genius transcends gender barriers.
The small percentage reminds us how recently women gained access to scientific education and professional recognition. But each crater also represents hope: as we add more women’s names to lunar features, we document growing acknowledgment that science advances fastest when all talented minds contribute freely.
These women reached for the stars. Now their names shine among them forever.
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