Thor discovers something very wrong

Thor has a rather violent reaction when he's awoken by the Guardians of the Galaxy, but the footage shown at this summer's conventions suggested that peace is made quickly between them. Based on the context provided, it seems that the Guardians are able to calm the Asgardian king down, and together they travel to an agreed upon destination. Unfortunately, what they find at said destination isn't at all what they expected. In material not shown in the trailer, Thor and Rocket look through portholes of the Milano at a vista we cannot see, leading the former to say, "Something is very wrong" (you kind of get a taste of it with that early shot of Thor in a spaceship). We have no idea what they were looking at, or why it is wrong, but we'll just have to wait a bit longer for the answer apparently.