That question is a popular one amongst scientists, sci-fi authors, and the casual dreamer alike. The Are We Alone? infographic from the BBC was designed by Information is Beautiful to illustrate the Drake equation. The Drake equation is used to calculate how many potential aliens may exist in the Milky Way Galaxy. This is an equation that American astronomer Frank Drake formulated in the 1960s to calculate the number of detectable extraterrestrial civilizations may exist in the Milky Way Galaxy. What's interesting about this interactive infographic is that it lets the user change the assumptions and recalculate the results.

Amazing and unimaginable equation...how could anyone come up with that???

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