Authors: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

It's easy to reckon that the oomph to hurl even a Smart Car-size spacecraft to another star at, say, 20 percent the speed of light (and land it when it arrives) is the energy contained in 50 billion gallons of gasoline. The tank's not big enough.

Seth Shostak

         
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