Cruising across the galaxy faster than the speed of light. Getting "beamed up" from the surface of a planet to the deck of a spaceship. Battling aliens from far-flung worlds.

Those ideas from the beloved "Star Trek" series have captured the public's imagination for nearly two generations. They've also grabbed the attention of leading physicists and astronomers who study the science that underlies much science fiction.

 

Lawrence Krauss, a theoretical physicist and author of the "Physics of Star Trek," and Seth Shostak , senior astronomer at the SETI Institute (Search for Extraterrestrial Intelligence) in Mountain View, Calif., were in New York last week to probe the science of "Star Trek" at the World Science Festival. They also answered a few questions on the topic for ABCNews.com.

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