This book ponders the possibility of aliens visiting the Earth, and what it would mean if we were to pick up a signal from the cosmos that would prove we're nei... » 

This book ponders the possibility of aliens visiting the Earth, and what it would mean if we were to pick up a signal from the cosmos that would prove we're neither alone, nor the smartest creatures in creation. It explains why scientists think life might be plentiful on other worlds, what it might be like, and how we might get in touch. «