Today's "Planet Earth Report" --Stunning Photo of China's Space Station, Tiangong-1 Hurtling Towards Earth: 'Impact Window Includes USA & Europe'

In the next few days, a defunct, unoccupied Chinese space station, Tiangong-1 meaning 'heavenly palace' - shown in the vivid image below, is expected to reenter the atmosphere following the end of its operational life. Most of the craft should...