The Mighty Thor #2 (Vol 2)

The Silver Surfer has come to Earth bearing a dire warning: Galactus approaches! Thor, with his unparalleled might, is the sole defender against the formidable World Eater, yet his strength has waned from his voyage to the World Tree. Loki and Sif unite to defend Asgard on Earth, but their success without Thor remains uncertain. The mysteries of the GALACTUS SEED are destined to surface soon.