NASA prepares to deflect asteroid for first time in planetary defence test

NASA is set to launch a spacecraft to test whether it can deflect an asteroid away from a potentially catastrophic collision with Earth.

Fortunately this asteroid is not a threat to Earth – but scientists generally regard impact events as the greatest threat facing humanity.

Mark Gibson

Graduates in Northwestern University, Evanston, Illinois 1990. Move to Los Angeles California in 2004. Specialized in Internet journalism.

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