Earth like planet with two moon like satellites

I was thinking about this world with different ancient factions on war. The war caused both of them and most life on the planet to die, I was thinking about one of the moons getting shattered as a result of such war.

The humans that survived made their own society and remember little to no detail on how the world was before the war, it has been many years and nobody kept records of how life was back then.

I want to use the moons shattering because it is made of this mysterious mineral than can be used as fuel, it is rare but extremely efficient, and also because I want to show off how destructive that war was. The mineral can produce a significant amount of fuel without the need to posses a big amount of it. I want to know how viable a catastrophe such as a moon shattering would be for the plot, keeping in mind that the planet can continue to support life.

Maybe not keep the whole moon crashing on the planet, but have some of it orbit around the planet, and after many years some pieces fell on one side of the planet, the remaining pieces are somehow stable on the planet's orbit... But I don't know if any of that would be possible in the first place so it makes some sense!

What I would like to know is how to make it so the moon that shattered does not kill off the entire life on the planet?

posted about 5 years ago

hOlim‭

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