What I meant was that they had already been planned out as alternatives to Barbarians 8). We've been at this a while

. The basic foundation for meteor strikes and the like are already in the Python engine, I just haven't written the event generator yet. Warsong is evangelizing a more codified approach, where when the game starts, all meteor strikes are plotted for the entire game, whereas, I had intended to use a more lazy generation system, where they were generated 10+ turns before they were going to occur (dependent on the size of the strike--and these vary widely), and then, based on available technology/infrastructure, factions on the moon would be notified. My way is particularly easier because we're intending to artificially restrict strikes from occuring on friendly cities and territory for a certain number of turns based on difficulty.
Solar storms are even easier. I forget the time period, but I think it's every.. 11 years? or 7 years or something, there is a major solar storm that occurs that will basically irradiate anyone caught on the surface of the moon (outside a base). This is a known phenomenon, and so will be warned about via event messages, planned on, and will result in all units on the surface not in a bunker, base or other protective improvement to take damage dependent on the unit type and that faction's technology. Every 11*11 years (121

there is a major solar storm (Class A or something like that) which is what knocked out our space station, btw. That storm will require everyone to take cover from the surface or die (barring exceptional technology), satellites will get knocked out, colonies will suffer building brown outs. Fun all around

.
Moon quakes were espoused by JBG and Kronik or whatever his name was, but Warsong and I have preliminarily scrapped them as the Moon does not have an active molten core to generate any such thing. Similarly borehole mining wouldn't cause quakes either for the same reason.
The other natural hazard we're adding is the somewhat exaggerated Lunar Dust spread system, which I want to test in the current mod (assuming I can con Matt into making me a dust feature), before we commit to including it. I'm just not sure whether it will be interesting and fun, or just a pain.