Maybe you sci.astro.amateur and sci.astro readers can explain this

Common Man wrote:

Pearl is a regular in the alt.animals.ethics.vegetarian newsgroup and
claims that the earth could be hollow. She goes on to claim that this
could have been caused by a rapidly spinning early earth. I've tried
to explain (without success) that such a rapidly spinning body would
flatten out rather than become hollow.



A Field Guide to Critical Thinking
http://www.csicop.org/si/9012/critical-thinking.html

Tuning Up Your Crank Filters
http://www.colorado.edu/philosophy/v...fs/Cranks.html

Hollow Earth
http://www.crank.net/hollow.html

Earth
http://www.edu-observatory.org/eo/earth.html