Most people can’t tell you where a nation is on the globe, especially if you ask about smaller nations. So, it’s not surprising to say that people simply aren’t aware of what’s “out there” in space. Many wouldn’t be able to name the 8 planets in our solar system in order from the sun not realize that there’s now 8 and not nine planets.
Our neighborhood solar system has three belts made up of planet debris (the most popular theory) which spit out “wet wads” from time to time (ice balls if you will).
Way out there on the outskirts of our planets is the first potential trouble maker in what’s called the Oort Cloud. It contains more than 100 times the mass of earth, spead over millions of miles. Because it is so far out there, taking around 200 years to orbit the sun, we pay lttle attention to the Oort band or belt.
What we’re more familiar with though is the comet making Kuiper belt that extends from Neptune, past Pluto. Many of the comets in this belt get sucked into Jupiters gravity field and crash. Such an example would be the Shoemaker-Levy 9 comet which collided with Jupiter in 1994 creating fireballs bigger than earth.
Closer to home is the third belt or the asteroid belt located between Mars and and Jupiter. This little dirty debris field seeds our planet mainly with water as millions of these little ice balls fall on earth each year, bsically undetected.
History tells us that our planet has been troubled and gretly altered by junk from one of these trio of trouble. As an example, in March of 1989 Asteroid 1989FC almost ended life as we knew it. This asteroid crossed the path where our earth was only six hours earlier. That’s a close call. Most have some memory of thestrike in Siberia in 1908 that hit with a force equal to 1,000x the Hiroshima atomic bomb. And for those that do such in depth study, the dinosaurs were wiped out 65,000,000 years ago at Chicxulub near the Yucatan. Coincidently where the Mayans developed their space expertise.
Hmm. 
And then we have the many abnormalities like a possible planet X, Nibiru, and or planet #2003-UB-313. Who knows? The answer is very few and that is the potentially troubling thought for 2012.
