Video: Mind the Gap: Will Tiny Discrepancies Derail Cosmology?

In Dec. 2024, Prof. Alex Filippenko was interviewed by Dr. Brian Greene for the World Science Festival. They discussed the accelerating expansion of the Universe, dark energy, and especially the current "Hubble tension" -- the discrepancy between the measured and predicted current expansion rate. The episode (2 hours long) is now available at https://www.worldsciencefestival.com/programs/mind-the-gap-will-tiny-discrepancies-derail-cosmology/(link is external)

Note that Prof. Filippenko has noted a correction to saying 16 instead of 14 helium nuclei around t = 45 minutes! (His excuse is that he did the interview after staying up very late for the last Astronomy C10 "bull session," on cosmology.)