Chinese astronauts talk water use, space junk protection

Female astronaut Wang Yaping gives a lecture to about 330 primary and middle school students, through a live video feed system about 340 km above the Earth, on June 20, 2013. (Photo: CNS)

In the interactive exchanges with students back on the Earth, Chinese astronauts aboard the Tiangong-1 orbiter also answered questions related to water use in spacecraft, space debris protection measures, ways to deal with gravity-free environment as well as space views.