April 2, 2004

If Life Is Out There, Where Will We Find It?

By RICHARD MONASTERSKY

Article: Goodbye, Little Green Men. Hello, Astrobiology.

Earth is just one planet in a galaxy of a hundred billion stars in a universe of perhaps hundreds of billions of galaxies. And that's just the part of the universe we can see. Given the possibilities, The Chronicle asked researchers involved in astrobiology where they expect to find evidence of life, either extant or extinct. Mars and Jupiter's moon Europa were top

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