The moon blew up without warning and for no apparent reason

This article presents a detailed numerical simulation inspired by Neal Stephenson's novel Seveneves, where the moon suddenly breaks into seven pieces. The author designs a simulation including gravitational interactions, pairwise collisions, fragmentation, and energy-conserving integration using the Verlet method. The goal is to verify whether the exponential cascade of collisions leading to Earth's bombardment is physically plausible. The article covers simulation design, O(N^2) direct summation, and comparisons to advanced methods like Barnes-Hut. It is highly technical, focusing on orbital mechanics and computational physics, clearly related to IT/TECHNOLOGY through programming, simulation, and algorithms.