Chris Cassidy

Astro/SEAL


Chris Cassidy’s journey, defined by a life of elite performance and discovery.

Chris Cassidy’s life is defined by a relentless pursuit of excellence in the world’s most extreme environments. This journey is a testament to the ‘never-quit’ mindset, proving that with perspective and perseverance, the most daunting frontiers can become the next great milestone for discovery.

377 Days in Orbit

Across three missions and two different spacecraft, Chris accumulated over a year of life in space, spanning the final assembly of the station to its modern era of research.

10 Spacewalks

Chris tied the U.S. record for the most spacewalks by an American astronaut, totaling nearly 55 hours working in the vacuum of space to maintain and upgrade the ISS.

500th Person in Space

During his first flight aboard the Space Shuttle Endeavour (STS-127), Chris reached a historic milestone when he was designated the 500th human to ever travel into orbit.

ISS Commander

As Commander of Expedition 63, Chris was responsible for the safety of the crew and the success of hundreds of global scientific experiments during his six-month mission in 2020.

14th Chief Astronaut

Between missions, Chris served as NASA’s 14th Chief Astronaut, where he managed flight assignments, mission preparation, and orbital support for all U.S. flight crews.

International Science

During his time in orbit, Chris served as a lead flight engineer, conducting breakthrough research on cancer therapies, robotic assistants, and the effects of microgravity on human biology.

11 Years Served

Chris Cassidy’s eleven years of service as a Navy SEAL shaped his ability to lead teams with precision, discipline, and unwavering resolve.

Combat Leadership

His combat leadership in Afghanistan reflects a proven capacity to make clear, high‑stakes decisions in the most demanding environments.

Presidential Unit Citation

As a member of a SEAL team awarded the Presidential Unit Citation, Chris exemplified the teamwork, courage, and operational excellence required for mission success.

Strategic Growth & High-Stakes Results

Through multiple specialized roles, Chris mastered the tactical skills and strategic mindset that define elite military leadership.

Chief Astronaut at NASA

As NASA’s Chief Astronaut, forged philosophy that empowers leaders to stay focused, disciplined, and decisive in the most demanding environments on Earth and beyond.

$300M+ National Museum CEO

Drawing on his leadership as President & CEO of the National Medal of Honor Museum, Chris shows executives how purpose‑driven values can unify teams, elevate performance, and accelerate organizational momentum.

Two Elite Command Frameworks

Chris blends the operational rigor of commanding America’s astronaut corps with the character‑based leadership of the Medal of Honor community to give organizations a blueprint for navigating uncertainty with clarity and conviction.

Strategic Results for High-Stakes Teams

His experience leading both NASA’s astronaut office and a national institution equips executives with the mindset needed to drive strategic growth, inspire trust, and deliver results when the stakes are highest.

600-Mile Amazon Expedition

Chris Cassidy brings a mission‑driven urgency to environmental stewardship, shaped in part by his ride through the Amazon where he witnessed the devastating effects of deforestation up close.

Two Wheels Across the Rainforest

His commitment to protecting the planet is fueled by firsthand experiences—like cycling deep into the Amazon rainforest to understand the human and ecological consequences of environmental decline.

A Threatened Ecosystem

Chris challenges leaders to confront environmental realities with the same clarity and courage he applied in space and on the battlefield, informed by what he saw while biking through one of Earth’s most threatened ecosystems.

Orbital Perspective from 250 Miles Up

From the Amazon to orbit, Chris Cassidy uses his global perspective to inspire organizations to take meaningful action on sustainability and safeguard the world future generations will inherit.

“Doing the right thing, when nobody is looking. Doing what you say you’re going to do. Those things are fundamental in life.”

The Journey

From the depths of the ocean and into the cosmos.

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Naval Academy Graduation

Annapolis, MD

Chris earned his commission from the U.S. Naval Academy, marking the start of a distinguished military career.

1993

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Elite SEAL Qualification

Chris successfully completed the grueling Basic Underwater Demolition/SEAL training to become a member of the Navy’s most elite maritime force.

1994

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Special Operations Navigation

Norfolk, VA

Serving with SEAL Delivery Vehicle Team TWO, he specialized as a navigator for stealthy, underwater insertion missions.

1994 – 1998

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MIT Ocean Engineering Research

Boston, MA

Chris earned his Master of Science from MIT, where his research focused on the advanced navigation of autonomous underwater vehicles.

1998 – 2000

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Combat Command in Afghanistan

Coronado, CA

As a Platoon Commander with SEAL Team THREE, he led elite teams in Kandahar during the initial weeks of the war following 9/11.

2000 – 2002

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Maritime Special Warfare Leadership

Norfolk, VA

He served in critical leadership roles at Special Boat Team TWENTY, managing high-stakes operations as an Executive Officer.

2002 – 2004

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Selection to the Astronaut Corps

Houston, TX

Chris was one of only 11 Americans and 3 Japanese selected for NASA’s 19th group of astronauts, beginning his transition from the sea to the stars.

2004

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First Space Flight — STS-127

Cape Canaveral, FL

Launching aboard Space Shuttle Endeavour, he completed his first flight and performed three high-stakes spacewalks to expand the space station.

2009

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Second Space Flight — Expedition 35/36

Biakonur, Kazakhstan

He launched on a Russian Soyuz to spend six months in orbit, conducting critical research and three additional spacewalks.

2013

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Chief Astronaut of NASA

Houston, TX

Chris was appointed as NASA’s 15th Chief Astronaut, leading the entire corps and managing the selection and training of future crews.

2015 – 2017

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Amazon Jungle Expedition

In a feat of endurance, he led a self-supported 1,000 km bicycle trek across the Amazon to raise awareness for global environmental stewardship.

2017

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"Among the Stars" Documentary

Filming began for a global Disney+ docuseries that provided a behind-the-scenes look at the rigorous training for Chris’s final space mission.

2018

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Third Space Flight + Mission Commander — Expedition 63

Biakonur, Kazakhstan

During his final flight, Chris served as Commander of the ISS and welcomed the historic arrival of the first crewed SpaceX Dragon.

2020

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Executive Leadership Transition

After retiring from the Navy and NASA, he accepted the role of President and CEO to lead the development of the National Medal of Honor Museum.

2021

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National Medal of Honor Museum opens

Arlington, TX

Chris realized a massive strategic vision with the official grand opening of the National Medal of Honor Museum.

2025

Today.

Now retired from the Navy, NASA, and the Medal of Honor Museum, Chris Cassidy is focused on sharing the leadership, resilience, and mission‑driven mindset forged across his extraordinary career. He now dedicates his time to speaking, mentoring, and inspiring organizations to lead with clarity, courage, and purpose.

Chris continues to champion environmental stewardship, global perspective, and service‑based leadership as he helps the next generation navigate an increasingly complex world.

Chris and Peggy at home with bicycles
NASA Astronaut and Navy SEAL Chris Cassidy waving alongside Anatoly Ivanishin and Ivan Vagner while boarding the Soyuz MS-16 spacecraft at the Baikonur Cosmodrome in Kazakhstan.
Chris Cassidy NASA Astronaut Portrait
Chris and Peggy at home with bicycles
Chris Cassidy and his family during New Years Eve