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In some ways, 2024 YR4 is one of the most worrying asteroids we have ever encountered. It was, for instance, given a rating ...

On the world's first Asteroid Day, Nina Burleigh discovers that Nasa has already commissioned a team of 'planetary defenders' ...

There is a chance - albeit a small one - that an asteroid could hit planet Earth within the next decade. The 2024 YR4 ...