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.
More top news
The youngest royal will make her second public appearance later this afternoon when she is baptised in Norfolk.
Jayln Rippy died and her mother and brother were seriously injured by the fish, which can grow up to eight feet long.
European nations are collectively consuming more fish than its waters can provide, according to a new study.