Stopping a destructive asteroid impact is not a walk in the park, even for the U.S. government, NASA, and other space agencies.
For the past years, NASA and other space experts have been trying numerous methods to stop space rocks from destroying the planet.
"We know that the dinosaurs went extinct by an asteroid or comet that hurt the Earth millions of years ago," said Nancy Chatbot, a Johns Hopkins Applied Physics Lab planetary scientist.
She added that what they want to do is to prevent it from happening again in the future.
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