In this video, I’m going to carry on and look at what happened between 370,000 years and about 4.6 billion years ago when our sun formed.
So for the first time, the universe has become transparent, so what can we see. Well not very much. And now that the universe is transparent lets hop into my time and space machine and go and have a look. If you look round, you can see an orange glow all over the place. These are photons produced during the decoupling where photons stopped interacting with matter. If we stick around for the next 3 million years or so we will see that orange glow get gradually redder and redder as the expanding universe red shifts the light waves until eventually nothing is visible. These photons haven’t gone they are now just not in the visible part of the spectrum. By the time we get to our time, these photons have become shifted so much that they are now in the microwave part of the spectrum.
Link for Part 1
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Link for Part 2
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Chapters
0:00 Introduction
0:50 Cosmic Microwave Background Radiation
1:50 Liquid Water?
3:05 Matter & Dark Matter
5:35 The First Stars
7:10 Reionisation
8:13 Methuselah Star
8:39 The First Galaxies
9:10 Time moves more slowly
10:20 Dark Energy
11:00 Proxima Centauri
Credits
ESA/Hubble, CC BY 4.0 [ Ссылка ], via Wikimedia Commons
Andromeda Galaxy
Torben Hansen, CC BY 2.0 [ Ссылка ], via Wikimedia Commons
