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Asteroid news: MIT unveils plan to deflect a 'planet-killer' asteroid before it hits Earth

Asteroid news: MIT unveils plan to deflect a 'planet-killer' asteroid before it hits Earth 1

The keyhole passage is a region of space near Earth where the planet’s gravity can still shift an asteroid’s orbit.

Even if an asteroid is deemed safe now, the rock can threaten the planet at a later date if affected by the keyhole passage.

Dr Paek said: “A keyhole is like a door — once it’s open, the asteroid will impact Earth soon after, with high probability

One such asteroid is expected to scrape by the Earth nine years from now on April 13.

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The 1,100ft-wide (340m) Asteroid Apophis will come hurtling past Earth at more than 67,000mph through a region of space where geostationary satellites are in orbit.

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