Nukes more frightening than Sci-Fi guns.

Mankind: can't travel beyond our solar system, but can blow himself up with his own superweapons.

Humans are small,Smart,fragile,creative,dangerus,numerus and powerful animal.
They are fragile but with their numbers they can make things that make them more powerful....
And the strongest one is the "nukes" and the least dangerus is the *spoon* and with that You know they hold the power to destroy the world and fight of a "fly"

Also this remember the strongest nuke in human history is the tsar bomba and it's build was Made for something 2x stronger....
And it's still less powerful than a Gram of antimater