There has to be something. Unless there's something weird with the magnetics of this place which... okay, Roswell, but I haven't seen anything yet?
I know I didn't have any when I arrived, but do arrivals usually undergo any tests, if they're willing I mean. I have a couple ideas... but it's all about vibrational frequency readings and using them to track where the wormhole is penetrating in other universes. If we can find some kind of a pattern, it might help?
And I say this with the caveat that I'm not really a scientist, and don't play one on TV. I just learned a lot of this by hanging around with two really really smart quantum physicists and hands-on experience. So mostly science by osmosis...