So I've heard of meteorites "originating from Mars" (e.g. AH84001), but the phrase confuses me. I'm interested in what this means - have these rocks somehow escaped Mars' gravity and ended up here; or ...
Assume you have a small sliver of a lunar or martian meteorite (or an object asserted to be so). Without using any special scientific equipment, is it possible to verify (or give a high probability) ...