Marek Ziebart is a Professor of Space Geodesy (the science and engineering of using satellites). Andrew Steele is a doctor of physics, who moved into computational biology, and is now writing a book on aging. We left it to Helen Czerski to find where all of that intersects on another fascinating episode of Science Shambles with a conversation that goes from Elon Musk to immortality to health research funding to the very simple task of reinventing humanity... Support the podcast, and the Cosmic Shambles Network by pledging at http://patreon.com/bookshambles