Great mathematician, Dr. Gladys West, who made GPS possible, dies at 95

The woman who made GPS possible has taken her final journey.

Dr. Gladys West died at 95. She was the mathematician who built the model of Earth that makes GPS work.

She was born on a Virginia farm in 1930, the daughter of sharecroppers.

She picked tobacco as a child and walked miles to a one-room school.

She made herself valedictorian, earned a full scholarship, and stacked degrees in math until the Navy hired her in 1956.

At the Naval Proving Ground, she programmed computers the size of rooms using punch cards and flow charts. She calculated the shape of the Earth, the real shape, lumpy and irregular, precise enough that satellites could use it to tell you exactly where you are at any moment.

That work became GPS.

She retired after 42 years. Then she had a stroke at 70, recovered, and earned a PhD from Virginia Tech.

For most of her life, no one knew her name. Her work was classified. She didn't even tell her kids.

Then a friend asked for a bio in 2017 and the story came out. Hidden figure, finally seen.

She never used GPS herself. Preferred paper maps.

"If I can see the road and see where it turns," she said, "I am more sure."

She spent her whole life making sure the rest of us never had to wonder.