I don't know why it's so hard for people to understand. The turns of the planets, the moon, the solar system and the heavens in general, all have an energetic affect on life. Just look how dramatically the moons movements affect life. The planets do as well. In fact, this is the whole basis of astrology and it's quite astoundingly accurate.
2012 marks a certain alignment of our solar system with other heavenly bodies that only occurs every 24,000 years, some sources say 26,000. Aparently our solar system will pass through a "photon band" (thought to be connected to the pleaides) of differing energy that will cause our solar system's particles to increase in their vibrations raising everything up to a higher frequency. Many people have been able to get these things across to scientifically minded people though discussions in quantum physics and the multi-dimensional nature of all things in the universe.