Neil deGrasse Tyson has turned his lifelong fascination with aliens into a new book, “Take Me to Your Leader: Perspectives on Your First Alien Encounter.” ...

You'd think that a man who has made four theatrical movies about contact with extra-terrestrial life, both benevolent and malevolent, would have had at least one close encounter in his lifetime. But ...

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In a world easily startled by sensationalism, Tyson offers a cool, gentle voice of reason amid the unchecked fascination with alien visitation.