View Full Version : Hey Phil, tell me about this meteorite!

2007-Jan-23, 08:11 PM
So, I've been turning over this nifty chunk of (what I assume is) metal in my hands ever since the poker game at TAM 5 and it's got me to wondering.

Where, exactly did this come from? What is it composed of? Why does it look like its made of compacted layers? Is it true that this thing fell to the earth something like 30,000 years ago?

I'm interested in all these facts, but I think even more interesting to me is the epistemology behind them. I mean, how is it that we know this sort of information? How does one go about testing the age and composition of a meteorite? How can we tell that a rock like this one isn't native to the Earth but actually came from space?