[QUESTINY]

Originally Posted by houman

Hollow shaped and asymmetric planets (depending on size, mass and rotation velocity) have been predicted by Henri Poincare in an 1885 paper (“On the equilibrium of a fluid mass in rotation”)


http://www.josleys.com/show_gallery.php?galid=313

Houman


PS: see also (http://www.springerlink.com/content/c718520070135262/, http://smf.emath.fr/Publications/Gaz..._104_71-76.pdf)

Thanks for the link. Never heard of him. I'll check it out.