And God said, “Let there be light,” and there was light.

This is a picture of the entire sky taken of microwave light at a very specific frequency. It is an absolutely amazing picture. It is a picture of the universe at an extremely young age, at less than 0.003% of its present age. The universe is estimated to be 13,740,000,000 years old, and this recorded light comes from the universe when it is 379,000 years old. Why 379,000 years old? This is the time the universe cooled in its expansion so that light was not trapped anymore in the hot plasma and gas. Prior to that the universe was a hot fog of protons and electrons, among other particles, which was opaque to light. At the fog cooled, the electrons attached to the protons, forming hydrogen atoms which allowed the light to be emitted from the fog. This happened at the same period of time all over the universe and we see first emission of light from that universe that was emitted over 13 billion years ago. Because the actual time/space has expanded since that time, we see the bright white light "red-shifted" down to the microwave range. What was thousands of degrees 13 billion years ago, through this red shift, is cooled down to just a few degrees above absolute zero, the theoretical coldest temperature possible. (Technically absolute zero is not possible, but it is possible to get very close to it.)
What's so exciting about this? It is evidence the universe had a beginning. It fits with the Christian world view that God created the universe.
What's so exciting about this? It is evidence the universe had a beginning. It fits with the Christian world view that God created the universe.


