tag:blogger.com,1999:blog-823475152516987376.post-40724186426928739552014-12-10T07:00:00.000-05:002014-12-10T08:51:36.127-05:005 Questions on ET Life With Astrobiologist Caleb Scharf
Is there intelligent life in the universe? 5 questions with astrobiologist Caleb Scharf
Nicolaus Copernicus, the 16th century Polish astronomer and mathematician, wasn't the first to suggest that the Earth wasn't the center of the universe—the idea originated with the ancient Greeks—but he was the first to prove it with a mathematical theorem. By doing so he upended the notion that Earth Richardnoreply@blogger.com