Wednesday, April 28, 2010

It's About The Arms

When will we learn we are not the center of the universe?

A nicely done video that ties together the most important causalities in real climate change on earth. It comes in several segments, but is well worth watching.

The basic ‘missing piece’ is that the spiral arm is a density artifact not the physical motion of a pack of constant stars. In essence, there is a wave of compressed density that travels through the stars rather than the arm being one batch of stars and us being a different batch.

So when we are in the low density areas, we’re spread out and not getting as much of a cosmic ray dose from nearby stars. When we’re in the high density areas, we’re crammed up close and personal with many more stars and with many more cosmic ray sources.