Women Who Shaped Space Exploration
Hey there, space explorer!
You know how we always hear the same names when people talk about space history? Well, buckle up because behind every rocket launch, every Moon landing and every “one giant leap,” there were incredible women doing the math, writing the code and yes, actually flying the missions too. Their names weren’t always in the headlines and honestly, that’s something we’re here to fix. From brilliant mathematicians crunching numbers by hand to fearless commanders steering spacecraft through the cosmos women have always been at the heart of space exploration.
Ready to meet them? Let’s go!
The “Human Computers” — NASA’s Mathematical Pioneers
Before electronic computers became standard, NASA (then NACA) employed teams of women mathematicians known as “human computers.” These women manually calculated the complex equations needed for flight trajectories, aerodynamics and orbital mechanics.
Katherine Johnson is perhaps the most celebrated of this group. A Black mathematician of extraordinary ability, she calculated the orbital mechanics for John Glenn’s 1962 Friendship 7 mission and Glenn himself refused to fly unless Johnson personally verified the electronic computer’s numbers. She later calculated trajectories for the Apollo 11 Moon landing and the Space Shuttle program, receiving the Presidential Medal of Freedom in 2015. Her story along with colleagues Dorothy Vaughan and Mary Jackson was immortalized in the 2016 film Hidden Figures.
Dorothy Vaughan became NASA’s first Black supervisor and taught herself and her team FORTRAN, making them indispensable in the transition to electronic computing. Mary Jackson was NASA’s first Black female engineer, breaking barriers in wind tunnel research and later dedicating herself to helping other women and minorities advance within the agency.
Valentina Tereshkova — First Woman in Space
On June 16, 1963, Soviet cosmonaut Valentina Tereshkova became the first woman ever to travel to space, orbiting Earth 48 times aboard Vostok 6. A textile factory worker and amateur parachutist before her selection, Tereshkova defied every expectation of who could be an astronaut. Her mission lasted nearly three days longer than the combined flights of all American astronauts up to that point.
Sally Ride — America’s First Woman in Space
Twenty years after Tereshkova, Sally Ride became the first American woman in space, launching aboard the Space Shuttle Challenger on June 18, 1983. A physicist and astronaut, she flew twice and went on to serve on the commission investigating the Challenger disaster. After NASA, she founded Sally Ride Science to inspire young people especially girls toward careers in STEM. She remains one of America’s most iconic space figures.
Eileen Collins — First Female Space Shuttle Pilot and Commander
Eileen Collins broke new ground twice: as the first woman to pilot the Space Shuttle (STS-63, 1995) and the first woman to command a Space Shuttle mission (STS-93, 1999). A former Air Force test pilot, Collins embodied the evolution of women from support roles to full command authority in human spaceflight. Her STS-93 mission deployed the Chandra X-ray Observatory, one of NASA’s most important space telescopes.
Peggy Whitson — Record-Breaking Space Station Commander
Peggy Whitson is arguably the most accomplished American astronaut of her era. She holds the record for the most time spent in space by any American over 665 days across three missions. She was the first woman to command the International Space Station (ISS), doing so twice and the first female chief of NASA’s astronaut corps. A biochemist by training, Whitson combined scientific excellence with extraordinary physical endurance.
Mae Jemison — First Black Woman in Space
On September 12, 1992, Mae Jemison became the first Black woman to travel to space, flying aboard Space Shuttle Endeavour on mission STS-47. A physician, engineer and former Peace Corps volunteer, Jemison conducted bone cell research in microgravity. After leaving NASA, she founded her own technology company and the 100 Year Starship project focused on enabling interstellar travel within the next century.
Margaret Hamilton — Software That Landed Humans on the Moon
Margaret Hamilton led the team that developed the onboard flight software for the Apollo missions at MIT. Her code written at a time when software engineering was barely a recognized discipline was so robust that it saved the Apollo 11 mission. When a hardware error threatened to abort the Moon landing, Hamilton’s priority-display software correctly managed the system overload and kept the mission on track. She is widely credited with coining the term “software engineering.” Hamilton received the Presidential Medal of Freedom in 2016.
A Legacy Still Being Written
The legacy of these women extends far beyond their individual achievements. Today, women make up nearly a third of NASA’s active astronaut corps and hold senior leadership roles across every major space agency worldwide. The 2020s have seen Christina Koch complete the longest single spaceflight by a woman and the Artemis program designed to return humans to the Moon is built on the promise of landing the first woman on the lunar surface.
The stars were never only for one kind of explorer. These women proved it.
From Katherine Johnson’s calculations to Mae Jemison’s orbit, these women didn’t just participate in space exploration they defined it. Their stories remind us that the greatest missions in human history have always been a collective endeavor and that potential has never been determined by gender.