JWST Unveils How Galaxies Made the Universe Transparent: A Cosmic Mystery Solved!

In this video, we will explore how galaxies made the early universe transparent, and how we can observe this phenomenon with the James Webb Space Telescope (JWST), the most powerful and advanced telescope ever built. We will learn about the process of reionization, which transformed the intergalactic medium (IGM) from being mostly neutral and opaque to being mostly ionized and transparent. We will also discover how this process reveals the history and evolution of our cosmos, and how it affects our understanding of galaxy formation and evolution. Join us as we uncover one of the greatest mysteries of astronomy with JWST!

Chapters:
00:00 Introduction
00:50 The Nature and Properties of Light
03:17 What is Ionization
05:11 The Process and Effects of Reionization
07:12 James Webb Observations

Paper link:

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Celestron – StarSense Explorer LT 80AZ

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[mrhassell]

What's really interesting is, the way electromagnetic field's interact with ionized space.

[ssekabembemuhammad]

Excellent explaition, nice and interesting to hear about

[ospyearn]

What is ionized light? I thought light (and other particles) was the cause of ionization and that only atoms could be ionized. I find the explanation a bit confusing, also because of what I suspect are different pronunciations of "re-ionization" (hyphen inserted by me for emphasis). As far as I understand it, this is what happened. First there were only charged protons and electrons. Then these were combined pairwise into neutral hydrogen atoms in a two step process where energy was released in form of free photons (and there was light). Some time later the hydrogen atoms were ionized, but this time, not only by radiation but also by energetic particles, and in a more spacious environment where photons could move around without being absorbed by the task of splitting electrons and protons.

[humanrightsadvocate]

3:55 ionizing radiation is the proper term. There is no such thing as ionized light.

[scottymoondogjakubin]

If all matter after the big bang got jettisoned outward wouldn't there be a big void or are the voids of the universe created by big bangs and our universe is made of many pocket universes ?

[GrahamPorterHill]

Thought about this for a long time, 2 ms, it was a part of the Tesla formula that gave it away, vibration, as the activity the vibration Mildred the energy like plasterine,

[badwolfgooddog]

ai voice cannot pronounce reionization, very irritating

[richardmercer]

"Because they only have one electron to lose" explains nothing. If anything, one might imagine that atoms with more electrons would find it easier to lose one.

[aMartianSpy]

you're an ionized photon, or atleast smart as one