Into the Impossible With Brian Keating

What Is Dark Matter Really Made Of? (#396)

Feb 23, 2024

19:01

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In the podcast, they discuss the mysteries of dark matter and its potential candidates. They also delve into the possibility of detecting gravitational waves from the polarization of the CMB. Additionally, they explore the idea that there may be no life outside of Earth.

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Quick takeaways

Analyzing CMB polarization reveals gravitational wave imprints from the inflationary epoch.

Scientists search for WIMPs and axions to understand dark matter's composition and abundance.

Deep dives

Studying Cosmic Microwave Background Radiation

The study of Cosmic Microwave Background Radiation (CMB) provides insights into the origin and composition of the universe, serving as a type of film onto which waves of gravity could be exposed. This radiation, originating from the Big Bang, acts as a detector and a signal, offering a unique way to trace the universe's properties and evolution. By analyzing CMB polarization, scientists can uncover the imprint of gravitational waves, particularly those that emerged during the inflationary epoch, revealing crucial details about the universe's early stages.

Introduction

2min

Exploring Gravitational Waves and the Early Universe

3min

Unraveling Mysteries of Dark Matter

7min

The Elusive Search for Extraterrestrial Life

5min

Exploring Artificial Intelligence, Universe Existence, and Podcast Recommendations

2min

Please join my mailing list here 👉 https://briankeating.com/list to win a meteorite 💥

Remastered from our interview in 2022.

There are few concepts in physics as frequently discussed but as poorly understood as dark matter. After all, we don’t even know what it’s made of!

However, there are many potential candidates, and I had the pleasure of explaining them in my interview with Arvin Ash. We also talked about the fascinating possibility of detecting gravitational waves from the polarization of the CMB and why it is very likely that there is, in fact, no life outside of Earth.

Tune in!

Key Takeaways:

00:00:00 Intro

00:00:37 What is the CMB?

00:01:25 What is the polarization of the CMB?

00:04:49 What is the evidence for cosmic inflation?

00:05:46 What is the leading contender for dark matter?

00:11:51 There may be no other life in the universe!

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Additional resources:

➡️ Check out Arvin Ash:

💻 YouTube: https://www.youtube.com/channel/UCpMcsdZf2KkAnfmxiq2MfMQ

✖️ Twitter: https://twitter.com/arvin_ash?lang=en

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➡️ Follow me on your fav platforms:

✖️ Twitter: https://twitter.com/DrBrianKeating

🔔 YouTube: https://www.youtube.com/DrBrianKeating?sub_confirmation=1

📝 Join my mailing list: https://briankeating.com/list

✍️ Check out my blog: https://briankeating.com/cosmic-musings/

🎙️ Follow my podcast: https://briankeating.com/podcast

Into the Impossible with Brian Keating is a podcast dedicated to all those who want to explore the universe within and beyond the known.

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