Anyone familiar with science fiction will be quite familiar with the primary items categorized as Beam Weapons, including lasers, plasma weapons, phasors, and disruptors. The idea is instead of shooting them with a projectile such as with mass drivers or sending over an explosive warhead on a missile, simply focus large amounts of energy on the other ship's hull. Most things don't work well under intense heat or enormously high energy, thus causing systems to explode and other unpleasantness. Research progression: Galactic Warfare Space Militarization Space Weapons Beam Weapon Theory