Is that neat rock you found a meteorite? Probably not, but to be sure, you might want to use this handy flowchart by Randy L. Korotev of the Washington University Department of Earth and Planetary Sciences. It was adapted from a simpler chart from Deborah Guedes. But if you want a really simple chart, check out Randall Munroe’s version. -via Boing Boing
But it is funny how common and similar such stories are among geologists that have any sort of public enough role (e.g. college or university professor).
I have heard many wonderful stories from people who swear that they saw the rock fall, that the rock wasn’t in their driveway yesterday, or that it split their tree in two. I can’t explain how your rock got to be where you found it, but I can say that it is not a meteorite. [Every rock that someone has described as “it wasn’t there yesterday” was just the right size for throwing. Really.] Not everything that falls from the sky is a meteorite.