Nasa simulated an asteroid impact, couldn’t stop it hitting Europe squib

Scientists around the world have been bamboozled this week by a fictitious asteroid heading toward Earth.A group of experts from US and European space agencies attended a week-long exercise led by Nasa in which they faced a hypothetical scenario: an asteroid 56 million km (35 million miles) away was approaching the planet and could hit within six months.With each passing day of the exercise, the participants learned more about the asteroid’s size, trajectory, and chance of impact. Then they had…
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