How JWST Spotted a Cosmic Needle in a Haystack: An Ultra-Faint Galaxy from the Dark Ages

In this video, we’ll explore the amazing discovery of an ultra-faint galaxy in the cosmic dark ages, made by the James Webb Space Telescope (JWST). This galaxy, named JD1, is one of the oldest and dimmest galaxies ever seen, dating back to 480 million years after the Big Bang. We’ll learn how the JWST used its powerful instruments to confirm the redshift and measure the physical properties of JD1, and how this discovery sheds new light on the role of ultra-faint galaxies in the process of cosmic reionization, which transformed the Universe from a dark and opaque state to a bright and transparent one. This is one of the first scientific results from the JWST, which was launched in December 2021 and is expected to revolutionize our understanding of the early Universe.

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[martinkausoh]

It is really stunning and mind-blowing to see the bomb-shell results coming in from JWST one after the other. And it is a really humbling experience to grasp the enormous size of the universe.

[andrewcooper]

It just keeps getting better and better, 👍

[timpaterson]

Brilliant, well done all. Love this. Thank you !!

[dougthomson]

What a spectacular success James Webb has been!

[JKDVIPER]

Condensates. They happen automatically. Fast. Too much mass. Too much cooling. Severe tidal forces. Early galaxies happened first.

[Samantha-xyed]

I don't understand how looking at %1 of the sky is were the oldest galaxies are, does the other %99 of the sky hold no older galaxies?

[ArunKumar-qeul]

KINDLY MAKE A LONG MOVIE ABOUT YOUR FINDINGS. A SUGGESTION.

[FredSlocombe]

What is allegedly "bright and opaque?"

[stevencurrey]

These are very hard to follow with the rolling text

[richardmercer]

Awww --- isn't that cute! A tiny galaxy from the Dawn of Time. Can I take it home with me? Please Mom?!

[lvuyk]

😢we see at least two blobs representing a dual black hole Herbig. Haro system

[tdw]

Man needs to quit speculating and start the research.