NWA 7325 has a few very odd qualities. Its magnetic intensity is extremely low, for one thing, which has been an integral fact in figuring out just what the hell this thing is. Magnetic intensity is shared by rocks and the planet they originate from; Earth rocks have a magnetic intensity that can be tied to Earth, for example. This one's magnetic intensity is highly similar to that of Mercury, which was confirmed by Messenger, the spacecraft currently in orbit around the closest planet to the sun. There are some other clues; the meteorite is also very low in iron, like the planet, and it doesn't have any of the chemical signifiers that would identify it as, say, a Martian rock.