I don't want to put a downer on your weekend or anything, but here's Bill McGuire, Professor of Geophysical and Climate Hazards at University College London, writing about that exploding meteorite in Russia (£):
[A]t some point our world will, without doubt, be struck again by a massive asteroid on the scale of the dinosaur-killer 65 million years ago. Similarly, a colossal volcanic super-eruption, big enough to bring about a volcanic winter and destruction of the global harvest, is indisputable. It really is just a matter of time; Armageddon is not cancelled - just postponed.
Oh well. Better get on with my day.