Glass the bugs from orbit. For when you're 600 hours in and tired of dealing with giant pentapods. OP AF.
New artillery cannon is called Orbital Kinetic Cannon. Uses regular artillery ammo. Impact effect is basically the nuke impact. It could be lowered if you want.
As a plus side compared to mods like Ion Cannon, these cannons can be put on a mobile platform, taken to where the problem is and used to solve it.