Universe Today Podcast

[Interview] Nobel Prize Winner Explains JWST vs The Crisis in Cosmology

Jan 29, 2024

Dr. Adam Riess, Physics Nobel Prize laureate, discusses the Hubble Tension and the discrepancies in measuring the expansion of the Universe. They explore the significance of Cepheid variables, advancements in instruments like the James Webb Space Telescope, and the impact of dark energy. They also delve into measuring the cosmological constant and the challenges of finding supernovae. The concept of time dilation and the use of quasars as distance measuring tools are highlighted.

01:05:46

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Episode guests

Adam Riess

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Quick takeaways

Cepheid variables are important distance indicators used to measure long-range distances in the universe.

The Hubble Space Telescope and the James Webb Space Telescope have played crucial roles in narrowing down the measurements of the Hubble constant.

Future telescopes like the James Webb Space Telescope have the potential to discover new objects for distance measurement and provide broader capabilities for understanding the universe.

Deep dives

Cepheid variables as a yardstick for measuring distance in the universe

Cepheid variables have been used for a century to measure long-range distances due to their tight relationship between period and luminosity. They are discrete objects and their specific mass and temperature make them excellent distance indicators. Cepheids are supergiant stars and their high luminosity allows them to be visible even in distant galaxies.

Introduction

2min

Cepheid Variables as Reliable Distance Measurers

7min

The Rarity and Luminosity of Cephyberibals in Galaxies

3min

Measuring the Expansion of the Universe with the Hubble Space Telescope

5min

Measuring the Cosmological Constant in the Cosmic Microwave Background Radiation

27min

Discovering Supernovae: The James Webb Space Telescope

2min

Understanding Time Dilation and Observing Supernovae

21min

The Hubble Tension is one of the most exciting mysteries in modern day science. Different methods give different results for the expansion of the Universe. So, how can we solve this and can James Webb help us with that? Or will it make things even worse? Finding out with Physics Nobel Prize laureate, Dr Adam Riess.

🏅 Nobel Prize Winner John Mather Explains JWST
https://youtube.com/live/S1dOwht6D30

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