Thread:Ghelæ/@comment-5080468-20170724083802/@comment-47205-20170724090842

I think in the fictionverse monopolium is only used by civilisations that have dyson spheres or mature hypermatter technology, although I'm not entirely sure. But certainly once you have either of those, and Tier 3/4 societies could manage the former, you could make extremely powerful particle colliders to produce monopoles in bulk.

The kinetic energy of an impactor depends only on its mass and speed, not its composition, so monopolium is no better than any other material in that regard apart from the fact that the projectile would take up a lot less space. Depending on the mass of the monopoles, this could even become a disadvantage if the size of the projectile becomes smaller than its event horizon, but then I suppose you'd just increase the ratio of atoms to monopoles to lower the density.

The expression for kinetic energy is m[(1 - &beta;2)-1/2 - 1], although &beta; = 0.05 is nonrelativistic speeds so you might as well just use mv2/2.

To do either calculation, I don't know which type of ton you're thinking of, so for simplicity I'll assume metric, so the kinetic energy of the specified impactor is 2000[(1 - 0.052)-1/2 - 1] kg = 2.5 kg = 2.25 x 1017 J = 53.9 megatons of TNT. The relativistic corrections only contribute to 101 kilotons of this.