Watch: China launches astronauts into space after 5 yrs, to build space station

China launched its first crewed mission to space in 5 years, with Shenzhou-12, or 'Divine Vessel' carrying 3 astronauts to the under-construction space station which the Asian nation aims to complete by 2022. The astronauts will spend 3 months in space, the longest time spent by Chinese nationals in low-Earth orbit. Shenzhou-12 is third of 11 missions aimed to building China's space station. Watch the full video for more.