Could we save Earth from a 10-kilometre wide comet in six months? Yes, say astrophysicists, if we act more quickly than the world in Don’t Look Up.
Inside the mission to stop killer asteroids from smashing into Earth
The launch would have to occur five months before the asteroid or comet was due to hit, giving us just a month to prepare. “You have to be ready. You can’t wait,” says Lubin. The penetrators would then strike a month before the impact date, exploding in concentric rings from the outer edge of the asteroid or comet towards its centre. That would give us the greatest chance of blasting it into small-enough fragments that would be mostly pushed out of Earth’s path.
“Will any of them hit? Probably,” says Lubin. “But if it’s a choice between everybody dying and some, you have to make some choices.”, the acting head of the European Space Agency’s planetary defence office, says the idea seems reasonable, but wonders if we would have enough time to act. “Even if there are enough nuclear explosive devices, you’d still need to get them up on a rocket in four weeks,” he says. “I don’t see how that can happen.
Thankfully, our best surveillance efforts suggest we won’t need such a call to arms any time soon. “There’s nothing that we are worried about for at least the next 100 years,” says
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