The significance of what Dart mission portends for humanity ...Qatar

The success of Nasa’s recent Dart (Double Asteroid Redirection Test) mission, which saw a spacecraft deliberately crashed into an asteroid to nudge it into a faster orbit, marked the world’s first test of a planetary defence system designed to prevent a potential doomsday meteorite collision with Earth. The relevance of the proof-of-concept mission, which was seven years in development, points directly to the fact that the Cretaceous mass extinction event which occurred about 66mn years ago, killing 78% of all species, including the remaining non-avian dinosaurs, was most likely caused by an asteroid (later named Chicxulub) hitting the Earth in what is now Mexico, potentially compounded by

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