Harold Spencer Jones, M.A., Sc.D., F.R.S., is England's Astronomer Royal. A hardheaded, straight-thinking scientist, who refers to writings of Eddington and Jeans as "romance," he is, ex officio, director of Greenwich Observatory and responsible for Greenwich time's astronomical integrity.* The question he has heard most often in his 50-year career is: Does life exist on other worlds? Astronomer Jones set out to assemble the evidence in the case, published his conclusions last week in Life on Other Worlds (Macmillan; $3).
The same 92 standard elements from some of which earth's life is formed appear to be universal. No one, even with...