Star Formation: Vortex Builds Stars, Planets This might interest Neville or Steven.. I have always been very sceptical on the Hollow earth anyone? but this article from Sepp who is usually reliable , and conventional made me have a read.. I never rubbish anything till it becomes a contradiction. Philip. http://blog.hasslberger.com/2007/12/star_formation_reverse_whirlpo.html The concept of a "hollow earth" has been around for centuries. Today, it is debunked as a mere scientific curiosity, as in this article by John H. Lienhard, from which also comes the following illustration by William Reed published in 1906. Is there any evidence for this and why haven't we seen it?