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Gretchen Green

Dr. Gretchen Green is a commercial astronaut, physician entrepreneur, educator, and speaker dedicated to expanding human potential through purpose-driven exploration. A distinguished radiologist and nationally recognized medicolegal expert witness, she built a two-decade career in womens imaging before founding The Expert Resource to help clinicians build impactful expert witness businesses. In 2025, Dr. Green flew as the first woman physician commercial astronaut on Blue Origins NS-32 mission, marking a milestone in the emerging era of diverse commercial spaceflight. A lifelong advocate for STEM education, she began her journey at Space Camp in 1986 and now serves on the board of the U.S. Space & Rocket Center Education Foundation. An explorer at heart, she bicycled 3,000 miles across the United States at 16 to raise awareness for world hunger and reached the North Pole in 2022. Today, she inspires audiences through work in education, exploration, and personal excellence.

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