Five years ago whilst observing the annual Perseid meteor shower I was seeing the usual trails coming from the radiant point when one was just a bright flash with no observable trail. Almost simultaneously there was a click coming from the roof of my house behind me. I'm fairly convinced that it was a grain of sand sized meteorite that made it down to hit the roof. Considering the substantial tonnage of matter that falls from space to the earth every day it doesn't surprise me that it probably was a micro meteorite. I just wish it would have been possible to have found it as that would have been a trophy to be proud of.
Dave...