Thor''s Celestial Collecting Thor #337-348. Walter Simonson''s work on the Mighty Thor swept the Norse God of Thunder to heights never before seen and rarely achieved in his wake. From the majesty and mystery of fabled Asgard to the gritty streets of New York City, Thor was never the same.adventure continues as he discovers the true intent of the space faring beings that have set up shop on Earth. Guest starring, Ikaris, Ajak, and Sersi!