Chinese astronaut gives lecture from space

Wang Yaping,China's second female astronaut, has delivered the country's first-ever video lecture from space. 

Speaking to students via live video, Ms Wang used spinning tops, a ball, water and a fellow astronaut to explain physics in zero-gravity.

She was speaking from the Tiangong-1 space laboratory, where the Shenzhou spacecraft is currently docked,
China's fifth manned space mission, Shenzhou-10, is scheduled to end around 25 or 26 June.