Astronauts give lesson from space!
Chinese astronauts have given 330 school children in Beijing a very special science lesson - live from space!
The unusual class was delivered via video link from China's space lab, 340 km above Earth, on Thursday.
Female astronaut Wang Yaping showed how zero gravity affects different objects - with the help of a pendulum and a water bubble.
China sent three astronauts into space on 11 June for a 15-day mission.