（单词翻译:单击）
The space lecture featured a Q&A session towards the end.
Students’ questions ranged from what space looks like from Tiangong-1 to what problems the human body has faces in space.
One of the students asked if the astronauts can see space junk and how Shenzhou-10 will deal with any encounter with space debris1. Lecturer Wang Yaping, and the commander of Shenzhou-10 interacted with the students. Wang Yaping told the students about what precautions were taken to avoid collisions between Shenzhou-10 and space junk. She also demonstrated how weightlessness results in a loss of direction in space.
Nie Haisheng told the students that weightlessness poses challenges to human bodies and astronauts have to keep exercising and take medicine to stay healthy.
