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Can Colliding Stars Snap the Hubble Tension?

World Science Festival via YouTube

Overview

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Join this in-depth World Science Festival talk where cosmologist Hiranya Peiris and moderator Brian Greene explore fundamental cosmological mysteries including dark matter, dark energy, and the universe's expansion rate. Delve into discussions about the "six numbers" that define our universe, the limitations of inflationary theory, and the evidence supporting dark matter's existence. Learn about AXIONS and the strong CP problem, insights from the WMAP mission, and the revolutionary potential of the Vera Rubin Telescope. Discover how AI is transforming astronomical data analysis, the significance of neutron star mergers for understanding gravitational waves, and current knowledge about dark energy. The conversation also examines whether the multiverse concept represents legitimate science or mere speculation, and explores the emerging role of quantum simulations in cosmological research. This program is part of the Big Ideas series, supported by the John Templeton Foundation.

Syllabus

00:00 - Introduction
01:06 - Welcome Hiranya Peiris
07:45 - "Just Six Numbers" of the universe
11:22 - Inflationary theory is just a toy model
17:01 - What is the confidence that Dark matter is real?
28:52 - AXIONS and the strong CP problem
39:15 - Lessons from WMAP
45:22 - The Vera Rubin Telescope: A New Era in Astronomy
49:34 - How AI Will Analyze Astronomical Data
01:05:38 - What We Know About Dark Energy Today
01:14:11 - The Multiverse: Science or Speculation?
01:22:11 - The Power of Quantum Simulations
01:32:50 - Credits

Taught by

World Science Festival

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