Scientists have calculated how many aggressive alien civilizations can exist within our galaxy.

Calculations have shown that 15,785 alien civilizations may exist in the Milky Way. Further, the formulas of aggression were taken into account, showing that the chance of an advanced civilization being aggressive towards another is 0.0014%. That is, in the Milky Way, according to the equation 0.22, there are aggressive planets with aliens. However, if we take into account not only advanced civilizations but also incapable of interstellar travel like ours, the figure jumps to 4.42. The calculations were based on the Drake equation.