China's first space lab will fall to Earth on Saturday or Sunday according to predictions by the European Space Agency.
It also said Tiangong-1 may shower debris as it re-enters. But it added that there is more of a chance of being hit by lightning than the debris. Experts are unable to agree on exactly where the space lab will land. The Tiangong-1, launched in 2011, was China's first step toward building its own space station by 2022.