Using a external model of gravity like LaSage. That way the shell doesn't collapse.

© brant, Charles Chandler

 

Aetherometry and Gravity: An Introduction

 

by David Pratt

 

April 2005

 

This article presents a brief outline of the aetherometric theory of gravity and antigravity, based on Volume 1 and Volume 2A of Experimental Aetherometry, the first six monographs of The Gravitational Aether, and additional discussion in the Aetherometry Study Group.

 

http://www.davidpratt.info/aethergrav.htm

 

http://www.davidpratt.info/gravity.htm

 

That supplies the external pressure to keep the thing from flying apart, but what keeps it from collapsing inwards?