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Sun-powered lasers could vaporise asteroids before they get close to earth

Last Updated: Tuesday, February 19, 2013, 14:01

Lasers powered by sun could protect Earth from any threatening-looking asteroids by destroying them before they can get too close, U.S. researchers have suggested.

Asteroids threatening earth to be vaporized like in Star Trek

Last Updated: Friday, February 15, 2013, 15:35

As an asteroid readies for a fly-by of Earth on Friday, two California scientists have proposed a system that could eliminate a threat of this size in an hour. <br><br>