British physicist Stephen Hawking's first wife Jane (2nd L), son Timothy (3rd L) and daughter Lucy (4th L) attend the private funeral of Stephen Hawking at the Great St Mary's Church in Cambridge, Britain, on March 31, 2018. The funeral of Professor Stephen Hawking was held Saturday at a church near the Cambridge University college where he was a fellow for more than half a century. (Xinhua/Stephen Chung)