Can Colliding Stars Snap the Hubble Tension? | World Science Festival
Cosmologist Hiranya Peiris joins Brian Greene to discuss pressing cosmological mysteries spanning dark matter, dark energy, the expansion rate of space, and ...

World Science Festival
57.2K views • May 16, 2025

About this video
Cosmologist Hiranya Peiris joins Brian Greene to discuss pressing cosmological mysteries spanning dark matter, dark energy, the expansion rate of space, and the possibility of a multiverse.
This program is part of the Big Ideas series, supported by the John Templeton Foundation.
Participant: Hiranya Peiris
Moderator: Brian Greene
#worldsciencefestival #briangreene #cosmology #astrophysics
Don't miss a video! Subscribe NOW: https://www.youtube.com/worldsciencefestival?sub_confirmation=1
ABOUT WORLD SCIENCE FESTIVAL:
The World Science Festival (WSF) is a multimedia organization bringing the most transformative ideas in science to global audiences. Through long- and short-form videos spanning physics, cosmology, quantum mechanics, biology, neuroscience, consciousness, medicine, space exploration, the dilemma of free will, artificial intelligence, engineering, robotics, and beyond. WSF gathers world-renowned scientists, artists, and thinkers for dynamic discussions, debates, lectures, performances, films, and immersive live experiences.
Founded in 2008 and headquartered in New York City, the World Science Festival is a production of the World Science Foundation, a 501(c)(3) nonprofit organization. Our mission is to cultivate a public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future. With live events reaching millions worldwide and hundreds of millions of digital views, WSF continues to expand its global impact through festivals, educational initiatives like World Science U, and digital content that explores the near and far future of our world.
FOLLOW WORLD SCIENCE FESTIVAL:
Website: https://worldsciencefestival.com/
Instagram: https://www.instagram.com/worldscifest/
TikTok: https://www.tiktok.com/@worldscifest
X(Twitter): https://twitter.com/worldscifest
Facebook: https://www.facebook.com/worldsciencefestival
LinkedIn: https://www.linkedin.com/company/world-science-festival
Chapters:
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
52:45 - A Gravitational Wave Compact Object Merger of Neutron Stars
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
Can Colliding Stars Snap the Hubble Tension?
https://www.youtube.com/channel/UCShHFwKyhcDo3g7hr4f1R8A
This program is part of the Big Ideas series, supported by the John Templeton Foundation.
Participant: Hiranya Peiris
Moderator: Brian Greene
#worldsciencefestival #briangreene #cosmology #astrophysics
Don't miss a video! Subscribe NOW: https://www.youtube.com/worldsciencefestival?sub_confirmation=1
ABOUT WORLD SCIENCE FESTIVAL:
The World Science Festival (WSF) is a multimedia organization bringing the most transformative ideas in science to global audiences. Through long- and short-form videos spanning physics, cosmology, quantum mechanics, biology, neuroscience, consciousness, medicine, space exploration, the dilemma of free will, artificial intelligence, engineering, robotics, and beyond. WSF gathers world-renowned scientists, artists, and thinkers for dynamic discussions, debates, lectures, performances, films, and immersive live experiences.
Founded in 2008 and headquartered in New York City, the World Science Festival is a production of the World Science Foundation, a 501(c)(3) nonprofit organization. Our mission is to cultivate a public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future. With live events reaching millions worldwide and hundreds of millions of digital views, WSF continues to expand its global impact through festivals, educational initiatives like World Science U, and digital content that explores the near and far future of our world.
FOLLOW WORLD SCIENCE FESTIVAL:
Website: https://worldsciencefestival.com/
Instagram: https://www.instagram.com/worldscifest/
TikTok: https://www.tiktok.com/@worldscifest
X(Twitter): https://twitter.com/worldscifest
Facebook: https://www.facebook.com/worldsciencefestival
LinkedIn: https://www.linkedin.com/company/world-science-festival
Chapters:
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
52:45 - A Gravitational Wave Compact Object Merger of Neutron Stars
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
Can Colliding Stars Snap the Hubble Tension?
https://www.youtube.com/channel/UCShHFwKyhcDo3g7hr4f1R8A
Tags and Topics
Browse our collection to discover more content in these categories.
Video Information
Views
57.2K
Likes
1.1K
Duration
01:33:42
Published
May 16, 2025
User Reviews
4.7
(11) Related Trending Topics
LIVE TRENDSRelated trending topics. Click any trend to explore more videos.