Keyur Patel has spent more than forty years helping humanity reach places we once knew only as points of light.

He joined NASA’s Jet Propulsion Laboratory in 1985, beginning a career that would touch some of the great robotic voyages of our time. He worked in flight systems and engineering on Voyager, Mars Observer, and TOPEX Poseidon. He later held leadership roles on the Spitzer Space Telescope and served as deputy project manager and chief engineer for Deep Impact, the mission that struck comet Tempel 1 and opened a brief window into the ancient material inside.

Then came Dawn.

Keyur became project manager when Dawn faced serious technical and organizational challenges. He helped steady the mission and carry it toward launch. Propelled by ions, Dawn traveled to Vesta and Ceres, becoming the first spacecraft to orbit two worlds beyond Earth. Those distant bodies are remnants of the early solar system, preserved chapters in the story of how planets came to be.

Today, Keyur is JPL’s Associate Lab Director for Flight Projects and Mission Success. He oversees the implementation and operation of every JPL flight mission. It is an immense responsibility. Once a spacecraft leaves Earth, there is no workshop nearby and no simple second chance. Exploration depends upon disciplined engineering, imagination, patience, and people willing to make difficult decisions when the answer is unclear.

Keyur’s career reminds me that every voyage into deep space begins as an act of faith in human curiosity. Someone looks toward a distant world and believes it is worth knowing. Then thousands of people begin the long, exacting work of finding a way to reach it.

I photographed Keyur at JPL beside a model of Dawn, one of the spacecraft he helped send into the unknown.