You didn't just hear that...you felt it.
It rumbled, resonating through your flesh, your bones and everything around you.
Whether through lore or science, many people have attributed the effect of lightning's passage to many different supernatural actors. Accordingly, the kinetic disturbance has also picked up a host of names. Among the more enduring is "Donar" or "Thor". Thanks to the modern mythology of comic books and the films they have inspired, the force of nature embodied as a ferocious warrior has enjoyed a popularity as a modern superhero that he hasn't seen since before the changing of the religious guard started cutting down oak trees and nailing up wood crucifixes.
Thor was created from a union of Odin's power with that of Mother Earth, resulting in one of the most powerful beings ever known to Asgard. One curious development at the core of Thor's comic book characterization, though, has the guardian of Earth and Asgard bound by his father to the immortal's legendary weapon. To teach his son humility (and humanity, ironically), Odin created an enchantment that tied the power of the storm-who-walks-like-a-man-god to the hammer Mjolnir. Whomever holds the hammer and is deemed by its enchantment to be worthy, shall possess the power of Thor. Usually, possession is acquainted with more malefic intentions, but I suppose we'll let that one slide for now. As a father-figure, Allfather Odin is usually regarded as one geared more toward doing good than harm. Still, y'know, gods can be capricious and their ways can seem quite harsh to mortal sensibilities. Either way, the hammer was put in charge, a sophisticated leash for the power of Thor.
Now, one of the other great challenges some of you may remember being sent against Thor was the magical automaton called The Destroyer. I've never liked that. In my head, I've always tried to re-label it as The Annihilator. I've never understood why they chose the name they did at Marvel. The name of the hammer, star of Thor's show, is Mjolnir. Mjolnir means "The Destroyer". Bad enough that the robot's super-tough because it's made from the same metal (Uru) as the hammer, but they gave it the same name as the hammer. That's got to get a little confusing in the heat of combat.
Oh, well, maybe they can work on it during their next retcon. It can't be too far off. What time is it?