What a Wonderful World!
<p>The only reason we can figure out the history of our Universe from the clues we detect today is that the Universe had nearly the same initial conditions everywhere.</p>
<p>We detect particles of light, photons, that started their journey towards us as soon as the Universe became transparent, 400,000 years after the Big Bang. By that time, cosmic expansion cooled the primordial gas below 4,000 degrees, allowing hydrogen atoms to capture free electrons which until then scattered light in the earlier opaque fog. This relic light at a current freezing temperature of 2.73 degrees Kelvin above absolute zero, is the <a href="https://www.britannica.com/science/cosmic-microwave-background" rel="noopener ugc nofollow" target="_blank">cosmic microwave background</a>, constituting a percent of the white noise on the screens of old television sets.</p>
<p><a href="https://avi-loeb.medium.com/what-a-wonderful-world-c834c6234cc3"><strong>Click Here</strong></a></p>