If humans ever build an interstellar spaceship —a vehicle capable of reaching another star — one of the biggest questions will be which of the billions of stars in the Milky Way? should it visit?
Scientists debated possible interstellar destinations at the 100-Year Starship Symposium, a weekend meeting here sponsored by the Defense Advanced Research Projects Agency (DARPA) to discuss planning the first mission to another star system.
Among the top priorities for choosing a star to target is its potential to harbor life, said astrobiologist Jill Tarter of the SETI (Search for Extraterrestrial Intelligence?) Institute. [Gallery: Visions of Future Human Spaceflight]
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