they don't fit well, I'll agree to that, but they don't mean we have to throw everything out:<br /><br />Kupier belt objects, while largish, are quite small in reality. And objects of that size, far from the system barycenter, can easily get tossed around, and/or not form on the equatorial plane.<br /><br />We don't have enough data from studies that aren't experiencing strong selection effects to say how well the idea of "rocky planets near the star, gas planets further out" match.<br /><br />We do understand how it's possible for a gas planet, arising in such a system, can end up near the star. We either get 3-body dynamics, which essentially throws one of the planets inwards...or an aborted star-formation process.<br /><br />Once we get more data that can detect a range of planetary distributions (small rocky planets, normal sized gas giants etc) we'll be better able to determine the accuracy of our model. <div class="Discussion_UserSignature"> <p align="center"><font color="#c0c0c0"><br /></font></p><p align="center"><font color="#999999"><em><font size="1">--------</font></em></font><font color="#999999"><em><font size="1">--------</font></em></font><font color="#999999"><em><font size="1">----</font></em></font><font color="#666699">SaiphMOD@gmail.com </font><font color="#999999"><em><font size="1">-------------------</font></em></font></p><p><font color="#999999"><em><font size="1">"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- </font></em></font><font size="1" color="#999999">The Tenth Doctor, "Blink"</font></p> </div>