NASA's Swift observatory, first launched in 2004, is expected to re-enter Earth's atmosphere after a rescue mission that was not successful. The telescope, functioning for more than two decades, will break apart during re-entry. A significant portion of the debris will incinerate in the atmosphere. Experts forecast that the impact zone may encompass over 80% of Earth's surface. Authorities are monitoring the situation to assess risks to populated areas. The exact location of impact has not been determined. NASA's Swift Observatory Falling to Earth: Who Is Liable If Debris Causes Damage?