How to Collect Micrometeorites in Your Backyard

Meteors rain down on the earth every hour of every day. Most of these are hardly larger than a grain of rice or a pea. The majority are little more than particles of dust, 10 to 40 micrometers (0.0004-0.0016 inch) in size. The average one is scarcely a quarter of the width of a human hair. The atmosphere makes short… » 2/18/13 3:00pm 2/18/13 3:00pm