question about that recent new fact about the age of the kids. aren't they all technically the same age since they were all created by that ecto thingy at the same time? i think it would be more accurate to say that jade's birthday is first, then dave, rose, and johns is the latest.

All the kids were the same age when they left on their respective meteors.  But Jade landed four months before John did.  She didn’t not age during those three months.  

~Mod T