We are, almost certainly, the only intelligent life in the universe. But anyone who says they know for sure is full of hot air, argues new research. We simply don’t know enough about what’s out there ...

The Milky Way Galaxy as seen from the International Space Station Last spring scientists discovered three new Earth-sized planets outside of our solar system, raising the question: could intelligent ...

Paul Sutter is an astrophysicist at The Ohio State University and the chief scientist at COSI science center. Sutter is also host of "Ask a Spaceman" and "Space Radio" and leads AstroTours around the ...

How many intelligent civilizations are thriving, right now, in the Milky Way? Spoiler alert: I’m not going to answer this question by the end of this column. Today, it is unanswered and unanswerable.

The Drake Equation helps scientists estimate the odds of finding intelligent alien civilizations. It’s an age-old question: Do aliens exist? And what are the odds we’ll make contact? A famous ...

Since the 1960s, the Drake Equation has been used to predict how many communicative extraterrestrial civilizations exist in the Milky Way galaxy. Along these same lines, a new formula seeks to ...

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Frank Drake, a pioneering astronomer, passed away at age 92, leaving behind a significant legacy in the search for extraterrestrial intelligence (SETI). Drake's Project Ozma, an early SETI experiment ...