We are talking about two things today, one from thousands of years ago and the other millions of years. First we talk about ancient carvings made by Neanderthals, and then about the age of the oldest stars in the Universe.
Studies: Leder, D., Hermann, R., Hüls, M. et al. A 51,000-year-old engraved bone reveals Neanderthals’ capacity for symbolic behaviour. Nat Ecol Evol (2021) and N Laporte, R A Meyer, R S Ellis, B E Robertson, J Chisholm, G W Roberts-Borsani, Probing cosmic dawn: Ages and star formation histories of candidate z ≥ 9 galaxies, Monthly Notices of the Royal Astronomical Society, Volume 505, Issue 3, August 2021, Pages 3336–3346
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