bis-spaceflight.com The British Interplanetary Society | From imagination to reality
From imagination to reality
ksp.olex.biz Interactive Illustrated Interplanetary Guide and Calculator for KSP
saucers.com PARANOIA/FLYING SAUCERS/SATIRE
The Paranoidal Home Page. Where humans, aliens and interplanetary hybrids can all stare together at the same mindless dribble.