Fellow broadcasters have been sharing their tributes to Sir Patrick Moore on Twitter:
Very sad news about Sir Patrick. Helped inspire my love of astronomy. I will miss him!
A man I've admired from childhood. Sir Patrick Moore has died - great character .... Finally he's going up amongst the Heavens. #RIP
RIP Patrick Moore - you taught me to look up x
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Not a bad day at all - just a little patchy rain in the far north of Scotland.