Asgard is destroyed yet again after Norman Osborn seizes control of S.H.I.E.L.D. following the Secret Invasion as he seeks to expel Asgard from U.S. soil in an effort to consolidate power. Osborn leads the Dark Avengers in the Siege of Asgard. The invading forces are defeated with help from the reunited Avengers, although Asgard itself is toppled by the Sentry. Immediately following the Siege, Thor reerects Heimdall's observatory atop Stark Tower as sign of solidarity with Midgard and appreciation for the Avengers' aid.