I've been here about a day now, and there's one thing I can't figure out.
Why?
When people start going through the Gate, there's a reason for it. You don't screw around with things like that unless you've got something important pushing you to take the risk. Thing is, people are are conspicuously not missing pieces around here, so who's the one opening the Gate in the first place, and with what? Yeah, sure, it's that Tesseract thing, but Tesseract's just a name. There's got to be a trail to who and what.
I'll go ahead and say this right now. I'm going to find that trail, and I'm going to follow it to my brother, and I don't give a damn who gets in my way.