The symbol is a representation of Thor's weapon, Mjölnir, which is a powerful hammer forged by the dwarves of Nidavellir. The hammer has the enchantment that only the worthy may lift it.
Thor is the son of Odin, the All-Father of Asgard and the protector of Earth. He is a powerful warrior and has a variety of powers, including super strength, speed, durability, and the ability to fly. He is also able to control the weather and manipulate lightning.
The symbol of Thor's hammer is a reminder of his power and strength, and it is a symbol of hope for the people of Earth.