*How can scientists claim that most of the universe is invisible?*
Saul Perlmutter explains how observations of supernovae, cosmic expansion, and Einstein’s theory allow cosmologists to estimate the proportions of dark energy, dark matter, and ordinary matter. He also emphasizes the crucial difference between confidence in the data and confidence in the theories used to interpret it.
0:44 Building the Universe’s Energy Budget
2:44 Measuring Cosmic Expansion Through Time
5:23 Type Ia Supernovae as Standard Candles
10:02 Discovering Dark Energy Through Supernova Data
15:36 Separating Dark Matter From Ordinary Matter
19:46 Data Precision vs. Theory Interpretation
*Saul Perlmutter* is an American astrophysicist and Professor of Physics at the University of California, Berkeley. He was awarded the 2011 Nobel Prize in Physics for his groundbreaking discovery that the expansion of the universe is accelerating. His pioneering work has transformed our understanding of cosmology, including the study of dark energy and the evolution of the universe.
*Resources:*
* _Sense & Sensibility & Science_ — Saul’s undergraduate course at UC Berkeley using the tools of science to improve everyday decision-making: https://sensibility.berkeley.edu
* _Scientific Thinking for All: A Toolkit_ — a six-unit high school adaptation of the course, developed with the Lawrence Hall of Science and Nobel Prize Outreach: https://scientificthinking.lawrencehallofscience.org
* _Third Millennium Thinking_ — Saul Perlmutter, John Campbell, and Robert MacCoun on the tools scientists use to avoid fooling themselves, applied to everyday decisions: https://thirdmillenniumthinking.com
*More from Saul Perlmutter on Closer To Truth:*
* Closer To Truth: The Podcast: https://www.youtube.com/playlist?list=PLFJr3pJl27pLLkP0kHQKL9nZh35UkgkR_
* Closer To Truth contributors: https://closertotruth.com/contributor/saul-perlmutter/
*Subscribe to Closer To Truth:* https://www.youtube.com/@CloserToTruthTV
*Join the Community:*
* Membership (5,000+ videos): https://closertotruth.com/register/
* Audio Podcast: https://closertotruth.podbean.com
* Support the Show: https://closertotruth.com/donate/
* Official Merchandise: https://www.bonfire.com/store/closertotruth/
*Follow Us:*
* Facebook: https://www.facebook.com/CloserToTruthTV/
* Instagram: https://www.instagram.com/closertotruth/
* X: https://x.com/CloserToTruth
Closer To Truth, created and hosted by Robert Lawrence Kuhn, presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence and sentience. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.
#CloserToTruth #Cosmos #SaulPerlmutter #DarkEnergy #DarkMatter
source