The cosmos is three times as old as Earth. During most of creation's 14 billion year history, our solar system wasn't around. Nonetheless, the early universe still had the right stuff for life, and contained worlds that were just as suitable for spawning biology and intelligence as our own.
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About Seth Shostak
Seth Shostak was a contemporary American astronomer and author. Seth Shostak is an American astronomer and author, and is currently the senior astronomer for the SETI Institute. Read more on Wikipedia →