Exploring the Mysteries of the Expanding Universe with Adam Riess

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What is the Hubble tension? How does it challenge our current
understanding of the universe? Why do different methods of
measuring the universe’s expansion yield different results? And
does our cosmological model need a complete overhaul?  I had
the honor of discussing all this and more with none other than Adam
Riess. Riess is a renowned astrophysicist who won the Nobel Prize
in Physics for his groundbreaking research on the expansion of the
universe. Through extensive measurements and collaborations with
other scientists, Riess discovered an intriguing tension in the
size of the expansion of the universe, which has been steadily
increasing over the last decade. These results, which have reached
a significant level of more than 5 sigma, have revealed an
unexpected phenomenon: the universe's expansion rate seems to vary
depending on whether we start from the beginning shortly after the
Big Bang or from the present.  In this episode of Into the
Impossible, Riess and I explore the challenges of measuring
distances in the universe, the possible role of dark energy, and
how this challenges the concept of the cosmological
principle.   Tune in! Key Takeaways: 00:00 Intro 01:03
Proving Einstein wrong 06:38 Struggling with experiment results
08:57 What is the Hubble tension?  18:45 Can curiosity be
cultivated and sustained?  24:05 Measuring distances in the
universe using parallax 32:54 The Hubble tension persists 
38:56 Revising the cosmological principle  42:47 Gravitational
lensing  51:03 Surprising JWST findings  54:33
Theoretical implications of the Hubble Tension measurements 56:47
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