118 | Adam Riess on the Expansion of the Universe and a Crisis in Cosmology

118 | Adam Riess on the Expansion of the Universe and a Crisis in Cosmology

Astronomers rocked the cosmological world with the 1998 discovery that the universe is accelerating. Well-deserved Nobel Prizes were awarded to Saul Perlmutter, Brian Schmidt, and today's guest Adam Riess. Adam has continued to push forward on investigating the structure and evolution of the universe. He's been a leader in emphasizing a curious disagreement that threatens to grow into a crisis: incompatible values of the Hubble constant (expansion rate of the universe) obtained from the cosmic microwave background vs. direct measurements. We talk about where this "Hubble tension" comes from, and what it might mean for the universe.

Support Mindscape on Patreon.

Adam Riess received his Ph.D. in astronomy from Harvard University. He is currently Bloomberg Distinguished Professor and Thomas J. Barber Professor of Physics and Astronomy at Johns Hopkins University and a Senior member of the Science Staff at the Space Telescope Science Institute. Among his many awards are the Helen B. Warner Prize of the American Astronomical Society, the Sackler Prize, the Shaw Prize, the Gruber Cosmology Prize, the MacArthur Fellowship, the Breakthrough Prize in Fundamental Physics, and the Nobel Prize.


Jaksot(417)

86 | Martin Rees on Threats to Humanity, Prospects for Posthumanity, and Life in the Universe

86 | Martin Rees on Threats to Humanity, Prospects for Posthumanity, and Life in the Universe

Anyone who has read histories of the Cold War, including the Cuban Missile Crisis and the 1983 nuclear false alarm, must be struck by how incredibly close humanity has come to wreaking incredible dest...

2 Maalis 20201h 40min

85 | L.A. Paul on Transformative Experiences and Your Future Selves

85 | L.A. Paul on Transformative Experiences and Your Future Selves

It's hard to make decisions that will change your life. It's even harder to make a decision if you know that the outcome could change who you are. Our preferences are determined by who we are, and the...

24 Helmi 20201h 14min

84 | Suresh Naidu on Capitalism, Monopsony, and Inequality

84 | Suresh Naidu on Capitalism, Monopsony, and Inequality

Nations generally want their economies to be rich, robust, and growing. But it's also important to person to ensure that wealth doesn't flow only to a few people, but rather that as many people as pos...

17 Helmi 20201h 26min

83 | Kwame Anthony Appiah on Identity, Stories, and Cosmopolitanism

83 | Kwame Anthony Appiah on Identity, Stories, and Cosmopolitanism

The Greek statesman Demosthenes is credited with saying "I am a citizen of the world," and the idea that we should take a cosmopolitan view of our common humanity is a compelling one. Not everyone agr...

10 Helmi 20201h 38min

82 | Robin Carhart-Harris on Psychedelics and the Brain

82 | Robin Carhart-Harris on Psychedelics and the Brain

The Convention on Psychotropic Substances was a 1971 United Nations treaty that placed strong restrictions on the use of psychedelic drugs — not only on personal use, but medical and scientific resear...

3 Helmi 20201h 17min

81 | Ezra Klein on Politics, Polarization, and Identity

81 | Ezra Klein on Politics, Polarization, and Identity

People have always disagreed about politics, passionately and sometimes even violently. But in certain historical moments these disagreements were distributed without strong correlations, so that any ...

27 Tammi 20201h 21min

80 | Jenann Ismael on Connecting Physics to the World of Experience

80 | Jenann Ismael on Connecting Physics to the World of Experience

Physics is simple; people are complicated. But even people are ultimately physical systems, made of particles and forces that follow the rules of the Core Theory. How do we bridge the gap from one kin...

20 Tammi 20201h 26min

79 | Sara Imari Walker on Information and the Origin of Life

79 | Sara Imari Walker on Information and the Origin of Life

We are all alive, but "life" is something we struggle to understand. How do we distinguish a "living organism" from an emergent dynamical system like a hurricane, or a resource-consuming chemical reac...

13 Tammi 20201h 23min

Suosittua kategoriassa Tiede

rss-mita-tulisi-tietaa
tiedekulma-podcast
utelias-mieli
rss-poliisin-mieli
rss-duodecim-lehti
radio-antro
rss-sosiopodi
rss-ylistys-elaimille
rss-lihavuudesta-podcast
docemilia
mielipaivakirja
filocast-filosofian-perusteet
menologeja-tutkimusmatka-vaihdevuosiin
rss-tiedetta-vai-tarinaa
rss-tervetta-skeptisyytta