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الوطن
NASA Can't Shield Earth
NASA’s DART spacecraft successfully changed the orbit of the asteroid Dimorphos after colliding with it in September 2022 at a speed of 6.1 kilometers per second, shortening its orbital period from 11 hours and 55 minutes to 11 hours and 22 minutes. But Russian researcher Leonid Yelinin cautioned that this achievement—though the first deliberate alteration of a celestial body’s motion—does not prove humanity can deflect larger asteroids or confront every threat from space.
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