Space lab set for fiery return on Friday

China's Tiangong II space lab will spend its last days in orbit this week before making a controlled fall on Friday back into Earth's atmosphere, according to the China Manned Space Agency.

All of the space lab's assigned tasks have been finished. It is scheduled to fall out of orbit and reenter the atmosphere under ground control on Friday, the agency said.

Most of the spacecraft will burn up during the reentry process, with a small amount of debris expected to fall in a designated secure area in the South Pacific Ocean, it added.