Categories Articles Jonny Kim — a 35-year-old NASA astronaut, doctor, Navy SEAL, and combat veteran — reveals what he learned from his greatest mistake Post author By crystalg Post date March 11, 2020 Business Insider Feedburner Tags 35yearold, astronaut, Combat, Doctor, from, Greatest, Jonny, Learned, mistake, NASA, Navy, Reveals, seal, Veteran ← Is Vegan Protein Powder the Next Big Wellness Business? → Omega-3 Fats Won’t Lower Your Risk Of Developing Cancer, Study Finds