Full coverage: China Tiangong-2 Space Lab Launch

For more on the Tiangong-2 mission, we are joined by Professor Yang Yuguang from the China Aerospace Science and Industry Corporation.

Q1. President Xi has talked to the two astronauts some 400 kilometers above earth. This was done with state-of-art communication technologies. What's the significance of this earth-to-space communication for China's space program?

Q2. In what other fields can we apply this technology?