The Tiangong-1 prototype space lab, which China launched in 2011, became uncontrollable in 2016 and has been gradually losing altitude ever since.

A Chinese organization working on manned space flight says the spacecraft was in orbit at an average altitude of 167.6 kilometers as of Sunday morning, and that it is likely to re-enter the atmosphere on Monday.

The European Space Agency estimates that re-entry will occur between Sunday and Monday, while a US organization expects it to happen between 1900 UTC on Sunday and 0900 UTC on Monday.
The spacecraft is 10 meters long, weighs 8.5 tons and is about the size of a bus.

The Agency says most of the space lab will burn up upon re-entry, but the remaining debris may reach the earth's surface anywhere between the latitudes of 43 degrees north and 43 degrees south

It also says the probability of a person being hit by a piece of debris is 10 million times smaller than the annual chance of being struck by lightning.



Source: https://tinyurl.com/y85o4ca4