Knock Knock:
Another friendly cosmic reminder that our number will be up before we even know it. Last Saturday, 27 September, an asteroid the size of a house made the closest ever approach to earth, passing within 88,000km. Thing is, no one realised it until Sunday. Where were you then Bruce Willis and Ben Affleck, where were you then huh huh? So when the big one finally comes, governments need not worry about inciting widespread panic amongst the public: NASA won’t even know until it’s all over.