Today, we live in an age of exploration, where robots on Mars and planet-hunting telescopes are beginning to allow us to edge closer to an answer.
While we wait to establish contact, one technique we can use back on Earth 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.
Click on the infographic for the interactive version!
Brought to you by bbc.com.
Brought to you by bbc.com
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Mare S
I love the layout of this one – it makes the information easy to follow. I especially love the interactive version, so you can follow along in some sort of order.