Brother Captain Alexander wrote:
Thanks guys.

Imperium should be technology backwards society, and here we have civilians use weapon that can destroy planets - CIVILIANS.

I am just amazed AM didn't exploit this, regarding this... the fact that civilians use it shuld meant this gun can be used by everyone not only AM. So why don't they have this kind of weapon at every planet?

This is why I wanted to know this. I guess we will never know... Thank you anyway guys

jareddm wrote:

Who said anything about weapons being in the hands of civilians? Most worlds have some form of standing military in the form of their PDF, whose quality and resources can vary as wildly as Imperial Guard regiments. Who's to say that it wasn't simply combined fire from planet-based cannons or missiles that had mis-targeted? There's no mention at all of a single bomb or missile being the cause of the moon's destruction. The only description of the weapons used are that they are inferior to some standard for surface-to-space weaponry. And even if it was some single super weapon, who's to say that this wasn't the only one of such weapon on the entire planet? That it was kept locked away for only the most extreme of circumstances? Who's to say the moon isn't half or even a quarter of the size of Earth's moon, thus making such destruction far more prone to causing instability? There's far too many questions to try and draw any inference regarding the weaponry the planet had prior to the tyranid invasion.