Apollo 11 was an unprecedented mission, meaning there was always the possibility that astronauts Neil Armstrong and Buzz Aldrin would not make it back from the moon's surface.
A speech was prepared for then-US president Richard Nixon, penned by White House speechwriter Bill Safire on 18th July, 1969.
Fortunately, the mission was a success, meaning it never had to be read.
"Fate has ordained that the men who went to the moon to explore in peace will stay on the moon to rest in peace," the speech said.
Rev Dr Rodney Holder is an expert in Cosmology and Theology and told Premier why Christians shouldn't feel conflicted with having an interest in space.
He explained: "You've only got to read your Bibles, you know, 'when I look at the heavens, the moon and the stars, what is man that you're mindful of him?'
"The psalmist was awestruck and I think so jolly well should we be at God's universe.
"And when we are studying science, when we're uncovering the laws of nature and seeing the ever vaster size of it all, then one is even more awestruck than one might otherwise have been. It adds to God's glory for me and my appreciation of God's glory by doing this kind of study."
Meanwhile, members of the public have shared their personal memories of the Apollo 11 moon landings.
Britons have revealed touching stories, from a woman in labour who delayed going to hospital, to a man who proposed as they tuned into coverage of the landing.
"At the moment of landing I actually pulled the car up to listen to the radio," Bill Kerney, who popped the question to Jane on 20th July, 1969, the night astronauts Neil Armstrong and Buzz Aldrin arrived at the moon.
"My now-husband must have been moon struck on that night to do what he did," Mrs Kerney recalled to Press Association.
The couple have been married for 48 years and went on to rename their boat Apollo 11 in memory of the big occasion.
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