[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-club00:00:00 Intro00:01:41 Understanding the expansion of the Universe00:03:10 Hubble Tension and Crisis in Cosmology00:05:53 Cosmic ladder of distances00:17:30 CMB measurements00:24:47 The Boring Solution00:31:10 The Exciting Solution00:37:25 Red Shift Drift00:48:05 Time machine for free 00:54:14 Perfect solution with unlimited funds00:57:05 Advice for young astronomers 01:03:44 Outro📺 VIDEO VERSIONhttps://youtu.be/JGYHwpsMQ1w📰 EMAIL NEWSLETTERRead by 60,000 people every Friday. Written by Fraser. No ads.Subscribe. It's FREE: https://universetoday.com/newsletter🎧 PODCASTSUniverse Today: https://universetoday.fireside.fm/Astronomy Cast: http://www.astronomycast.com/🤳 OTHER SOCIAL MEDIATwitter: https://twitter.com/fcainTwitter: https://twitter.com/universetodayFacebook: https://facebook.com/universetodayInstagram: https://instagram.com/universetoday📩 CONTACT [email protected]⚖️ LICENSECreative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast