What he is not well known for are his ruminations regarding science.
But it was something he thought about deeply, a newly unearthed essay written by the wartime leader has revealed.
Churchill was an accomplished writer.
He was the first prime minister to hire a science adviser, and in the 1920s and 30s wrote a number of popular science essays for newspapers and magazines on topics such as evolution and cells.
Fox News reported that people were unaware of this rare piece of knowledge.
Churchill's interest in science and technology helped fund laboratories and research in post-war United Kingdom which included inventions in molecular genetics and X-ray crystallography. During the war, he promoted the use of radar and supported the country's nuclear program. The letter was titled, "Are We Alone in the Universe?". That time he changed the title of the 11-page essay. Somehow, it had been forgotten.
Despite this background, Dr Livio described the discovery of the essay as a "great surprise".
In an article published in this week's edition of the science journal Nature, Livio examined the essay's contents. The original letter could not be published due to copyright issues. But the museum is working to see that it will eventually be released.
In the essay, he actually draws from the Copernican Principle which states that human life should not be the only one present in the Universe.
But Churchill didn't even stop at our region of the galaxy, pointing out that with "several thousand millions" of other stars out there, many of them could host planets. From there, he presumes that there are probably other forms of "comparatively highly-organised life". Other life-sustaining liquids can not be ruled out, he stated, but "nothing in our present knowledge entitles us to make such an assumption".
Water on Mars. Unfortunately, nothing lingers there now. "Our searches for life in the universe today are primarily guided by liquid water". During his life he was a soldier, war correspondent, Member of Parliament, First Lord of the Admiralty, historian, painter, and now we find out, a science pundit. The possibility of those plants fostering extraterrestrial life should not be considered an impossible notion. Venus's atmosphere is poisonous. Churchill was skeptical of many of his own assumptions (he notes that just because all life on Earth requires water doesn't mean that other forms of life aren't possible) and Livio writes that he was clearly familiar with the science of his time, including the work of Edwin Hubble. But in 1939, British Prime Minister Winston Churchill had one other thing on his mind: extraterrestrials. Just last week, it was announced, according to the Daily Mail, that a team of researchers led by the University of Hertfordshire had discovered 60 new planets and evidence of 54 more. He also foresaw the space program. For one, the article talked about the high chances of life on Mars and Venus. But Churchill was unconvinced by this and favored the modern idea that the planets coalesced out of a disk of dust and gas around what we would now call a protostar.