In a lot of my blogs I have talked about things out in space like black holes, neutron stars, the sun, meteors, etc. Today I am going to wander in the other direction and wonder about what is under our feet. If you are a politician it is the rest of us, if you are the rest of us it is good old Mother Earth. But what do we know about what is under our feet? How far has man penetrated our Earth and does anything live down there. Bacteria have been discovered in the cracks of rocks in gold mines 2.4 miles deep. Some scientists believe that the bio-mass that lives deep underground outweighs all the life on the surface.
Our Earth is made up of four major layers; the outer crust, the mantle, the outer core, and the inner core. The inner core is an iron rich orb that is actually larger than the planet Mercury. Its outer part is molten but the inner part is solid and spins independently of the rest of the planet. it has been discovered that earthquake waves travel faster north and south than they do west and east. One reason for this could be that area has metallic crystals that are aligned with the earth's poles and the waves may travel faster "with the grain", so to speak. If it were not for the spinning of the inner core that creates a magnetic field around the earth, the solar wind would strip us of our atmosphere like it did on Mars. So let us hope that the inner most part of our world keeps on spinning and keeps on creating a magnetic field that will keep on protecting us from the harmful affects of our closest star.
It is cloudy and warm here today with chances of rain all weekend, so we will not be seeing the sun, but I hope the sun always shines on you and brightens your day. So, have yourself a great start to the weekend, you hear?