359 | Solo: Theories of Dark Energy

The cosmological constant, as discussed last episode, provides a perfectly good (thus far) explanation for why we observe the universe to be accelerating. But it might not be the right explanation, and demonstrating that would be yet another foundational discovery. In this episode I discuss what is required to invent a plausible theory of dynamical dark energy, This includes considerations from particle physics, possible experimental tests, and the option that we should modify gravity rather than adding a new source of energy to the equations.

Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/06/29/359-solo-theories-of-dark-energy/

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Jaksot(434)

360 | Marc Berman on the Science of Touching Grass

360 | Marc Berman on the Science of Touching Grass

Modern life has, in many ways, removed us from the environments in which our ancestors lived and adapted. Not only do we spend time looking at screens, but we spend time indoors, or outdoors but in ur...

6 Heinä 1h 29min

358 | Solo: Vacuum Energy and the Cosmological Constant

358 | Solo: Vacuum Energy and the Cosmological Constant

The most surprising discovery in fundamental physics during my career as a scientist was undoubtedly the acceleration of the universe, announced in 1998. The most straightforward explanation for these...

22 Kesä 1h 59min

357 | Jeff Coller on mRNA, Vaccines, and Bespoke Therapeutics

357 | Jeff Coller on mRNA, Vaccines, and Bespoke Therapeutics

Messenger RNA (mRNA) plays a literally central role in the functioning of life as we know it, shuttling information back and forth between the DNA where it is stored to the ribosome where it is used t...

15 Kesä 1h 19min

356 | Andrea Wulf on Enlightenment, Nature, Romanticism, and Modernity

356 | Andrea Wulf on Enlightenment, Nature, Romanticism, and Modernity

All ideas have a history, no matter how inevitable and well-entrenched they may seem to us today. The later Enlightenment was a heady time when people were exploring new conceptions of nature, humanit...

8 Kesä 1h 17min

AMA | June 2026

AMA | June 2026

Welcome to the June 2026 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreo...

1 Kesä 3h 57min

355 | Solo: Looking Quantum Mechanics in the Eyeball

355 | Solo: Looking Quantum Mechanics in the Eyeball

One of the major obstacles to understanding quantum mechanics is the difficulty we have in simply accepting what the theory itself is telling us. The problem is that we know what the everyday world lo...

24 Touko 1h 44min

354 | Christian List on Free Will and Levels of Reality

354 | Christian List on Free Will and Levels of Reality

Did I have any freedom in choosing this particular podcast guest? At the level of particles, fields, and the fundamental laws of physics; no. At the level of human agents navigating the world, yes. To...

18 Touko 1h 26min

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