Astronomer Dr David Whitehouse told Sky News that Sir Patrick Moore had "loved astronomy more than he loved himself".
He was passionate, he was dedicated and had an unselfish love of astronomy and he passed that on to everybody who knew him and he came across. He was a difficult person personally to deal with on many occasions, he was sometimes awkward, truculent, stubborn but that was Patrick, that was part of his remarkable personality which so many people came to enjoy and love.
I think many people realised he was a unique person.
He was not a professionally trained astronomer and yet did professional quality work, particularly when it came to mapping the Moon in the 1950s - I think every astronomer in the world owes something to Patrick Moore.
More top news
Clear and cooler conditions to the south and east with lows into single figures.
Police have arrested three teenagers and a man following the shooting of a three-year-old girl with an air gun.
Police have released new images of the site of the fatal crash near Shoreham Airshow in which at least 11 people died.