Sherlock Holmes and Dr. Watson went on a camping trip. As they lay down for the night, the fire dwindling nearby, Holmes said: ""Watson, look up and tell me what you see"". Watson said ""I see a fantastic panorama of countless of stars"". Holmes: ""And what does that tell you?"" Watson: ""Astronomically, it suggests to me that if there are billions of other galaxies that have roughly similar stellar population densities as represented by my view, that, potentially, trillions of planets may be as…