Comment Re:Uh, no... (Score 1) 225
Thousands of cosmic rays do not pass through our bodies every day... They are stopped by the atmosphere.
While the atmosphere does stop the majority of cosmic rays, a fair number do get through. As an optical astronomer, cosmic ray hits on CCD cameras are a constant source of noise in my data. Fortunately, they are easy to remove during image processing provided you take more than one image of the field. Just do a google search for 'cosmic ray' and 'ccd' and you'll find a host of webpages discussing this topic.