The author has a lifelong interest in relativity and cosmology, with a degree in physics and a Ph.D. in gravitational dynamics. He later diversified from astrophysics to problems of manned space flight, completed a medical degree, and took up a research appointment. He was advisor to the NASA Apollo moon project, has travelled and lectured widely, and written many papers and articles. Subsequently he returned to a clinical practice, but is now retired and devotes time to writing and his hobby of astronomy.