[Interview] A Clever Hack to Solve The Hubble Tension

There is a disagreement in measurements of the Hubble constant often referred to as The Crisis in Cosmology. One way to solve it is to observe redshift drift. However, it requires lengthy observations. But my guest, Dr Geraint Lewis, has a hack up his sleeve — gravitational lensing.
👉 Redshift Drift story on Universe Today:
https://www.universetoday.com/162845/a-new-way-to-measure-the-expansion-rate-of-the-universe-redshift-drift/
👉 The Redshift Difference in Gravitational Lensed Systems: A Novel Probe of Cosmology:
https://arxiv.org/abs/2308.07529
👉 Dr Geraint Lewis' website: https://www.geraintflewis.com/
👉 Twitter/X: https://twitter.com/Cosmic_Horizons
🦄 Support us on Patreon:
https://patreon.com/universetoday
📚 Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
00:00:00 Intro
00:01:41 Understanding the expansion of the Universe
00:03:10 Hubble Tension and Crisis in Cosmology
00:05:53 Cosmic ladder of distances
00:17:30 CMB measurements
00:24:47 The Boring Solution
00:31:10 The Exciting Solution
00:37:25 Red Shift Drift
00:48:05 Time machine for free
00:54:14 Perfect solution with unlimited funds
00:57:05 Advice for young astronomers
01:03:44 Outro
📺 VIDEO VERSION
https://youtu.be/JGYHwpsMQ1w
📰 EMAIL NEWSLETTER
Read by 60,000 people every Friday. Written by Fraser. No ads.
Subscribe. It's FREE: https://universetoday.com/newsletter
🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
🤳 OTHER SOCIAL MEDIA
Twitter: https://twitter.com/fcain
Twitter: https://twitter.com/universetoday
Facebook: https://facebook.com/universetoday
Instagram: https://instagram.com/universetoday
📩 CONTACT FRASER
[email protected]
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)

There is a disagreement in measurements of the Hubble constant often referred to as The Crisis in Cosmology. One way to solve it is to observe redshift drift. However, it requires lengthy observations. But my guest, Dr Geraint Lewis, has a hack up his sleeve — gravitational lensing.

👉 Redshift Drift story on Universe Today:

https://www.universetoday.com/162845/a-new-way-to-measure-the-expansion-rate-of-the-universe-redshift-drift/

👉 The Redshift Difference in Gravitational Lensed Systems: A Novel Probe of Cosmology:

https://arxiv.org/abs/2308.07529

👉 Dr Geraint Lewis' website: https://www.geraintflewis.com/

👉 Twitter/X: https://twitter.com/Cosmic_Horizons

🦄 Support us on Patreon:

https://patreon.com/universetoday

📚 Suggest books in the book club:

https://www.goodreads.com/group/show/1198440-universe-today-book-club

00:00:00 Intro
00:01:41 Understanding the expansion of the Universe
00:03:10 Hubble Tension and Crisis in Cosmology
00:05:53 Cosmic ladder of distances
00:17:30 CMB measurements
00:24:47 The Boring Solution
00:31:10 The Exciting Solution
00:37:25 Red Shift Drift
00:48:05 Time machine for free
00:54:14 Perfect solution with unlimited funds
00:57:05 Advice for young astronomers
01:03:44 Outro

📺 VIDEO VERSION

https://youtu.be/JGYHwpsMQ1w

📰 EMAIL NEWSLETTER

Read by 60,000 people every Friday. Written by Fraser. No ads.

Subscribe. It's FREE: https://universetoday.com/newsletter

🎧 PODCASTS

Universe Today: https://universetoday.fireside.fm/

Astronomy Cast: http://www.astronomycast.com/

🤳 OTHER SOCIAL MEDIA

Twitter: https://twitter.com/fcain

Twitter: https://twitter.com/universetoday

Facebook: https://facebook.com/universetoday

Instagram: https://instagram.com/universetoday

📩 CONTACT FRASER

[email protected]

⚖️ LICENSE

Creative Commons Attribution 4.0 International (CC BY 4.0)

Support Universe Today Podcast