The Woman Behind Your Maps: Why Gladys West is the Real Reason You Aren’t Lost Right Now

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I had one more hidden figure to talk about for Black History Month. We are still early in March, and I really wanted to share this unsung hero, Gladys West. We’ve all been there: staring at the blue dot on our phones, waiting for it to tell us which way to turn. But have you ever stopped to wonder how that tiny dot knows exactly where you are standing on a planet that is constantly spinning, tilting, and—believe it or not—isn't even a perfect sphere?

Meet Dr. Gladys West. If you made it to work on time today or found that new coffee shop using GPS, you have her to thank.

What Was So Special About Gladys West?

While many people think GPS is just about satellites and "space stuff," the real magic happens in the math. Dr. West was a mathematician at the Naval Surface Warfare Center in Dahlgren, Virginia. Starting in 1956, she became the second Black woman ever hired there.

Her monumental task? Mapping the Earth. Earth isn't a smooth ball; it has "undulations" caused by gravity, tides, and mountains. Dr. West programmed the IBM 7030 "Stretch" computer to account for these distortions. She created an extremely precise mathematical model of the Earth’s shape, known as the geoid. This model became the foundational "map" that every GPS satellite uses to this day to calculate your exact position.

Why Don’t We Know More About Her?

It’s a question that often comes up with "Hidden Figures." For decades, Gladys West’s work was tucked away in military technical reports. In the 1950s and 60s, Black women in STEM were often treated as "human computers"—performing the heavy intellectual lifting while others took the spotlight.

In fact, she didn't even realize how much her work had changed the world until years after she retired. Her story only went mainstream in 2018 after a member of her sorority, Alpha Kappa Alpha, read a short bio Gladys had written for an alumni function and realized: "Wait, you're the reason GPS exists?"

Things You Probably Didn’t Know About Dr. West

  • She Still Prefers Paper Maps: Despite being the "Mother of GPS," Dr. West famously said she prefers a paper map because she likes to see where the road turns and where it’s been.

  • PhD at 70: After a 42-year career and surviving a stroke, she decided she wasn't done learning. She completed her PhD in Public Administration at Virginia Tech at the age of 70.

  • Pluto Pioneer: Before GPS, she worked on an award-winning study in the 1960s that proved the regularity of Pluto’s motion relative to Neptune.

  • A Recent Loss: Dr. West passed away very recently, on January 17, 2026, at the age of 95. She lived long enough to finally see her name etched into the history books alongside the technology she birthed.

The Road Ahead: Keeping History Alive

As we wrap up Black History Month, we remember that history isn't just in the past—it’s in the technology we hold in our hands every day.

Next week, we return to our regular scheduled programming and normal conversations, but don't think for a second we're done with these stories. There are so many more "hidden figures" whose contributions have shaped our world. I’ll be popping in with these stories throughout the year because Black history is human history—and it stays relevant every single day, not just in February.

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Did you know about Gladys West before today? Share this post to help her name become as famous as the technology she created!

Comments

  1. AnonymousMarch 8, 2026 at 7:56 PM

    I will admit this is a name I have not heard growing up. It’s so amazing that she got to live to see how she impacted the world.

    ReplyDelete

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