Acting Director of BBC television Roger Mosey has posted his tribute to Sir Patrick Moore on Twitter:
Space scientist Maggie Aderin-Pocock said she had got her first inspiration to look at the night sky from Sir Patrick.
She told BBC News:
Astronomer Dr David Whitehouse told Sky News that Sir Patrick Moore had "loved astronomy more than he loved himself".
Fellow broadcasters have been sharing their tributes to Sir Patrick Moore on Twitter:
The last Sky At Night programme was broadcast on Monday.
Sir Patrick has only missed one episode since it began, on 24th April 1957, when he was struck down by food poisoning.
His trademark monocle, unique delivery and occasional performances on the xylophone made him a familiar target for satirists and impressionists, but his scientific credentials were never in doubt.
The show's guests have included many prominent scientists as well as Goon Show star Michael Bentine and astronauts Neil Armstrong and Buzz Aldrin.
But the demands of live television have led to the occasional blooper, with Sir Patrick famously once swallowing a fly live on air.
Actor and singer John Barrowman has tweeted his sorrow at the death of Sir Patrick Moore:
Queen guitarist Brian May paid tribute to Sir Patrick Moore, calling him a "dear friend and a kind of father figure to me".
He said: "Patrick will be mourned by the many to whom he was a caring uncle, and by all who loved the delightful wit and clarity of his writings, or enjoyed his fearlessly eccentric persona in public life.
"Patrick is irreplaceable. There will never be another Patrick Moore. But we were lucky enough to get one."
Sir Terry Pratchett has tweeted his tribute and fondest memory of Sir Patrick Moore, the veteran broadcaster and astronomer died this morning: