Human space journeys are awe-inspiring but risky and immensely expensive. Donald Goldsmith and Martin Rees argue that science calls for leaving space exploration to AI-guided robots, since robots range more widely and see more than any human can. Humanity's future in space must await decisions based...

Human space journeys are awe-inspiring but risky and immensely expensive. Donald Goldsmith and Martin Rees argue that science calls for leaving space exploration to AI-guided robots, since robots range more widely and see more than any human can. Humanity's future in space must await decisions based on results from our ever-better machines.