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NASA to shoot asteroid into new flight path

NASA to shoot asteroid into new flight path

Technology
NASA is preparing its first ever mission to deflect an asteroid, a move the space agency hopes will provide lessons for how Earth can be protected from a potentially planet-destroying impact.The spacecraft for the Double Asteroid Redirection Test (DART) is now moving to the design phase, and aims to demonstrate the "kinetic impactor technique" in which it will strike an asteroid and physically knock it into a different flight path.The Didymos asteroid - named after the Greek word for "twin" - is being targeted because it is an asteroid binary system which consists of two bodies orbiting each other as well as the Sun.Didymos A is the larger body, and is about a half mile across (780 metres) with the smaller body, Didymos B, being only 530 feet across (160 metres)."A binary asteroid is the p...