Stephen Hawking's final book launched in London, Britain（3）
Timothy Hawking (L) and Lucy Hawking, Stephen Hawking's son and daughter, attend the global launch of "Brief Answers to the Big Questions", the final book by Stephen Hawking at the Science Museum in London, Britain, on October 15, 2018. (Xinhua/Stephen Chung)
Source：Xinhua Editor：Lucky
(Source_title：Stephen Hawking's final book launched in London, Britain)