There's a lot going on in Thor's life right now. His half-brother is back. His dad's back. But his city? Smashed. And the nexus of realities that is the World Tree has grown something that's got Galactus himself all rumbly in the tumbly. You know what that means: Thor vs. the Silver Surfer. Thankfully, the Odinson's got Sif at his side for the faceoff as Matt Fraction and Olivier Coipel launch The Mighty Thor #1 this Wednesday. Check out the book's variant covers and first four pages after the jump.From Marvel's official solicitation info:

It's a shining, golden, new age for the Thunder God and Matt Fraction and Olivier Coipel are back to lead the charge! Thor and Sif dive deep into the heart of the fractured World Tree to reclaim an artifact from beyond time and space, an artifact that attracts the attention of the Silver Surfer. And when a herald such as he arrives on Earth, the arrival of his master is certain to follow. Prepare for the return of the World Eater...prepare for the return of Galactus! Fans can't miss an all new behind the scenes look at the highly anticipated major motion picture with a sneak peek at some of the art!

Preview The Mighty Thor #1 below: