#OnThisDay 1965: John Noakes skied his way onto Blue Peter for the very first time. | BBC Archive

#OnThisDay 1970, Blue Peter were examining a caravan so luxurious it was good enough to spend five years in, travelling the world! | BBC Archive

#OnThisDay 1973: "We'd come to this cove to witness one of the most dangerous sights in the world." Blue Peter's John, Val and Pete were in Mexico watching the incredible cliff divers of La Quebrada. | BBC Archive

#OnThisDay 1971: Blue Peter introduced Fred, the genetically modified monstrosity who would be able to live on the moon. | BBC Archive

#OnThisDay 1983: Blue Peter celebrated its 25th anniversary with a parade of past presenters. | BBC Archive

#OnThisDay 1958: The first episode of Blue Peter aired. In 1983, the show celebrated its 25th anniversary with a parade of past presenters. | BBC Archive