Because UARS orbits Earth in just 96 minutes, it could begin re-entry almost anywhere along multiple orbits. In that same period of time, Earth will have rotated more than once under the orbit of the satellite, so theres practically no way to predict at what longitude UARS will land. Read more
The UARS Satellite is predicted to be observable from Southern Alaska at around 09:28 UT, 23rd September, 2011. It will pass over Canada, and then over the US, over Florida.
The Aerospace Corporation, a private firm that is tracking UARS, offered a more specific prediction, saying the satellite would likely come down off the coast of Chile at 6:06 p.m. EST. But William Ailor, who heads the company's centre for orbital and re-entry debris studies, said the time and location would almost undoubtedly change as Friday afternoon approaches. Read more
The UARS Satellite is predicted to be observable from Europe at around 21:08 GMT, 22nd September, 2011. It will pass over Spain, and then over southern France and the Alps.
The US space agency (Nasa) says that its out-of-control climate satellite is expected to crash to Earth sometime on Friday evening (GMT). There is still much uncertainty over when and where the satellite will re-enter the atmosphere. Read more