The true history of seven heavens and the eighth that it's the Earth

If we are reading this post now, it means that last February 15th happened nothing as was expected. On this day the lowest perigee object ever recorded passes close to Earth, 2012_DA14 with 50 m diameter and 190.000 Tm of weight (see NASA video with characteristics). This doesn’t mean that they haven’t previously been objects that pass closer to Earth, more if we think that Earth is 4,500 years old, simply we haven’t recorded in the few hundred thousand years of human existence. But much of the ignorance about if it has never been closer objects is because we really can’t until last 50 years that we can detect objects of this size, so whenever you have a sufficiently close to Earth was a surprise and a concern, not so much if we were mistaken in calculating the trajectory of this particular, and the fact that if one day find some its trajectory that will clearly impact with Earth.     It may seem like a horror movie, but there really is an alien threat and it isn...