Out in the depths of space there lurk a range of threats to our very existence. A ‘War of the Worlds’ scenario might be implausible, but can’t be discounted. Then there are meteorites. According to NASA, a strike from anything bigger than around two kilometers could have the potential to threaten the whole planet. Our most prominent neighbor in the Solar System, the Sun, poses an enormous threat to us too. Generally speaking, of course, the Sun is crucial
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