Patrick Moore died a short time ago. He was 89 and in poor health.
http://www.bbc.co.uk/news/uk-20657939
He popularised astronomy more than anyone else in this country and presented The Sky at Night from when it started on 24 April 1957 until the episode on Monday.
His RAF experiences, which included a visit to the Dachau concentration camp, left him a bitter opponent of war.
The war also brought a personal tragedy. His fiancee, Lorna, was killed when an ambulance she was driving was hit by a bomb. He never married.
"That was it," he said. "There was no one else for me. Second best is no good for me. I would have liked a wife and family, but it was not to be."