For most people, the " flying object" resembles images of . However, the theory of the existence of aliens has met with many . Some will even say that this is nothing more than stupidity. In their opinion, if we consider the vast distances that the stars separate, it is to think that aliens can visit us. Even if we could imagine an alien capable of traveling at speeds close to the speed of light, it would take them at least 4 years to reach our planet and another 4 years to return home. But for what? To kill some cows in the US Midwest? To kidnap a Boston postal worker? To collect a few samples of lavender in France? Let's get serious.