Originally Posted by WillCAD

No, no, no! You've got it all wrong!

It'll be a disaster of Biblical proportions - Old Testament, man, real wrath of God type stuff. Fire and brimstone coming down from the skies! Rivers and seas boiling! Forty years of darkness! Earthquakes, volcanoes! The dead rising from the grave! Human sacrifice, dogs and cats living together... mass hysteria!

It may also include Total Protonic Reversal. Try to imagine all life on Earth stopping instantaneously, and every molecule in your body exploding at the speed of light. That's bad.

Or... the encounter could create a time paradox, the results of which could cause a chain reaction that would unravel the very fabric of the space-time continuum, and destroy the entire universe! Granted, that's a worse case scenario. The destruction might in fact be very localized, limited to merely our own galaxy.

But critical services, like Congressional pages, maid service at the Naval Observatory, and the First Lady's social staff, would doubtless continue uninterrupted.