A world-ending asteroid, a nuclear bomb and one risky mission: Scientists explain their emergency plan to save Earth but there is a catch

Scientists have outlined a new strategy that could one day help protect Earth from one of the most devastating threats imaginable. The proposal explores an emergency response that may be considered if a dangerous asteroid is detected with very little warning. While the idea shows promise in simulations, researchers say it faces major technical hurdles and would only work under the right conditions, making timing a critical factor.

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