Latest John D. Mathews Stories
A Penn State engineer suggests that finding and identifying extraterrestrial life may require a big leap in robotics. John D. Mathews, professor of electrical engineering, wrote in the current issue of the Journal of the British Interplanetary Society that if there are aliens out there, they may not be eager to meet humans. He said that only by developing self-replicating robotic spacecraft would the human race be capable of efficiently exploring the vastness of the universe. "If...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.