Seth Shostak is a scientist, author, and frequent commentator on TV and radio. He writes a monthly column on Space.com and often lectures on his work at SETI. He lives in Palo Alto, California.
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Since the first Martian “canals” were charted in 1877, space aliens have captivated sky-gazers, night travelers, and television watchers worldwide. Polls show that nearly half of all Americans believe in extraterrestrials, and many are convinc... SEE MORE