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Keith Cooper - Time appeared to move 5 times more slowly in 1st billion years after Big Bang, quasar 'clocks' reveal:
https://www.space.com/quasar-clocks-universe-time-dilation
#TimeDilation #Timekeeping #Time #BlackHoles #QuasarClock #Clock #Quasars #Redshift #GeneralRelativity #Relativity #Astrophysics #Cosmology
Ingrid Fadelli - A highly precise terahertz molecular clock:
https://phys.org/news/2023-04-highly-precise-terahertz-molecular-clock.html
#AtomicClock #MolecularClock #Clock #Strontium #Sr2 #Terahertz #VibrationalModes #LASERs #Supercooling #Spectroscopy #Physics