In recent news, it was discovered that the Mayans did not run out of rock, but continued their astronomical calculations on a different piece of rock. Note: They never predicted the end of the world.
I am not certain whether the cultural significance
of sticking out your tongue has changed
over the last 5000 years.
The "planet" that defies all laws of physics and is heading our way with its magical thruster system has yet to appear. It should be visible by now. Even amateur astronomers should be able to pick this one up. If it actually existed.
During my own procrastinating investigation of this "planet" on the interwebs, I found many images of stars. Stars are stationary. Relatively speaking. I am being imprecise, but if stars start moving out of their solar systems to go on a little galactic trip, the galaxy is falling apart and then we have bigger problems than stockpiling. If something planet-sized were to collide with our planet, I do not think learning how to survive underground would be very useful or productive. Earth gone. Good luck in space. With your camping gear.
The Alien Invasion
Call me a geek, but I think this one could be really exciting. They would unite us as a species, because the human race would now have a common enemy to hate. I smell global cooperation.
Supernovas? Nothing close enough to go supernova and affect us. If there was, think "Big Bang". Moot point.
Rather than blaming the universe for our sins, maybe we could focus our energy and resources right here on our pale blue dot and do something about climate change, renewable and sustainable energy, overpopulation, mass extinction, pollution, famine, poverty...
In the meantime watch for the unused camping gear sales in January 2013.