(Discovery) Is there life in the universe? If there is, can it communicate — and does it want to talk to us? If such a civilization is out there, how long could it survive? These are some of the fundamental questions astronomers regularly consider when they think about aliens.
Suffice it to say the answers are not as easy as Star Trek or Star Wars would make you believe. The most famous answer took place in 1961, when astronomer Frank Drake proposed what is now known as the Drake equation. You can read it on the Search for Extraterrestrial Intelligence (SETI) website here in full, but understand that it outlines the variables needed for a technological civilization to communicate with us.
A new paper in Astrobiology suggests there could be a way to simplify the equation, based on the observations of exoplanets that we have made since the first one was discovered in the 1990s. While the result is depressing — life was plentiful, but is likely extinct — it does have applications to help us extend our own civilization, the researchers said.
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