Ultimate Fantastic Four #50 (2008) First Print, Cover A

FOUR CUBED PART 1 The Fantastic Four return from Siberia and find that Lower Manhattan and part of New Jersey have been encased by the Cosmic Cube. Using Reed's mental link, the team enters and makes their way to the Baxter Building. Reed and Sue have a short conversation. Sue appears to have decided to end her relationship with Reed.  Aliens, Halycon, Dreamcatcher, the evil tyrant Thanos, and others have found out Reed has developed a cosmic cube, and an intergalactic assault is taking place to get it. The cube was alerted, and formed a giant barrier in New York, when Tesseract and his team tried to steal the cube from the Baxter Building.   Reed uses his mental link with the Cube to remove the aliens, but more are entering earth's orbits in search of the cube...